# UK Postcode Validator & Enricher (`insulin_junkie/uk-postcode-enricher`) Actor

Validate and enrich UK postcodes with region, district, constituency, lat/long, NHS region, LSOA, MSOA and more. Uses the free postcodes.io API — no API key required.

- **URL**: https://apify.com/insulin\_junkie/uk-postcode-enricher.md
- **Developed by:** [Josh Watterson](https://apify.com/insulin_junkie) (community)
- **Categories:** Lead generation, Developer tools, SEO tools
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.00 / 1,000 results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md):

```bash
npm install apify-client
```

In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md):

```bash
pip install apify-client
```

In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md):

````bash
# MacOS / Linux
curl -fsSL https://apify.com/install-cli.sh | bash
# Windows
irm https://apify.com/install-cli.ps1 | iex
```bash

In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md).

If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).


# README

## UK Postcode Validator & Enricher

Validate and enrich UK postcodes with full geographic, administrative, political, and health data — using the free [postcodes.io](https://postcodes.io) API. No API key required.

Built for data teams, CRM enrichment, lead generation, and compliance workflows.

---

### What You Get

For each postcode, the actor returns:

| Field | Description |
|---|---|
| `postcode` | Formatted postcode |
| `status` | `VALID` or `INVALID` |
| `latitude` / `longitude` | GPS coordinates |
| `region` | e.g. London, North West, Yorkshire |
| `country` | England, Scotland, Wales, Northern Ireland |
| `district` | Local authority / council district |
| `county` | County (where applicable) |
| `ward` | Electoral ward |
| `constituency` | UK Parliamentary constituency |
| `constituency2024` | Updated 2024 boundary constituency |
| `nhsRegion` | NHS Health Authority region |
| `ccg` | Clinical Commissioning Group |
| `lsoa` | Lower Super Output Area code |
| `msoa` | Middle Super Output Area code |
| `outcode` | Outward code (e.g. SW1A) |
| `incode` | Inward code (e.g. 1AA) |
| `codes` | Raw ONS/GSS codes for all fields |

---

### Input

```json
{
  "postcodes": ["SW1A 1AA", "EC1A 1BB", "M1 1AE"],
  "useBulkApi": true
}
````

| Parameter | Type | Description |
|---|---|---|
| `postcodes` | String\[] | List of UK postcodes to process |
| `useBulkApi` | Boolean | Process in batches of 100 (recommended for large lists, default: `true`) |
| `requestDelayMs` | Integer | Delay between requests in ms (default: `100`) |

Postcodes are case-insensitive and spaces are handled automatically — `sw1a1aa`, `SW1A1AA`, and `SW1A 1AA` all work.

***

### Example Output

```json
{
  "postcode": "SW1A 1AA",
  "status": "VALID",
  "latitude": 51.501009,
  "longitude": -0.141588,
  "region": "London",
  "country": "England",
  "district": "Westminster",
  "county": null,
  "ward": "St James's",
  "constituency": "Cities of London and Westminster",
  "constituency2024": "Cities of London and Westminster",
  "nhsRegion": "London",
  "ccg": "NHS North West London",
  "lsoa": "Westminster 018C",
  "msoa": "Westminster 018",
  "outcode": "SW1A",
  "incode": "1AA",
  "codes": {
    "adminDistrict": "E09000033",
    "adminWard": "E05013806",
    "constituency": "E14000639",
    "lsoa": "E01004736",
    "msoa": "E02000977"
  }
}
```

***

### Use Cases

- **CRM Enrichment** — append region, district, and constituency to customer records
- **Lead Scoring** — segment leads by region, area deprivation (LSOA), or constituency
- **Data Validation** — clean and validate postcode lists before mailing or outreach
- **Geographic Analysis** — map customers by ward, district, or NHS region
- **Compliance** — verify UK addresses for KYC and onboarding workflows
- **Political Targeting** — identify constituency for voter outreach or canvassing

***

### Performance

The actor uses the postcodes.io bulk API to process up to **100 postcodes per request**, making large list enrichment fast and efficient. A list of 10,000 postcodes typically completes in under 2 minutes.

***

### Data Source

All data is sourced from [postcodes.io](https://postcodes.io), which is built on Ordnance Survey, ONS, and Royal Mail open data. The API is free, open, and publicly accessible — no registration required.

***

### Pricing

**$1.00 per 1,000 results + $0.05 per actor start**

***

### Combine With

Pair this actor with the **Companies House Enricher** (`insulin_junkie/companies-house-enricher`) or **FCA Register Scraper** (`insulin_junkie/fca-register-scraper`) to add full geographic context to your UK business data.

# Actor input Schema

## `postcodes` (type: `array`):

List of UK postcodes to validate and enrich. Accepts any format — spaces and case are handled automatically.

## `useBulkApi` (type: `boolean`):

Process postcodes in batches of 100 for faster results. Recommended for large lists. Disable for single lookups only.

## `requestDelayMs` (type: `integer`):

Milliseconds to wait between API calls. The postcodes.io API is generous — 100ms is usually fine.

## Actor input object example

```json
{
  "postcodes": [
    "SW1A 1AA",
    "EC1A 1BB",
    "CV11 7AS",
    "M1 1AE",
    "B1 1BB"
  ],
  "useBulkApi": true,
  "requestDelayMs": 100
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "postcodes": [
        "SW1A 1AA",
        "EC1A 1BB",
        "CV11 7AS",
        "M1 1AE",
        "B1 1BB"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("insulin_junkie/uk-postcode-enricher").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "postcodes": [
        "SW1A 1AA",
        "EC1A 1BB",
        "CV11 7AS",
        "M1 1AE",
        "B1 1BB",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("insulin_junkie/uk-postcode-enricher").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "postcodes": [
    "SW1A 1AA",
    "EC1A 1BB",
    "CV11 7AS",
    "M1 1AE",
    "B1 1BB"
  ]
}' |
apify call insulin_junkie/uk-postcode-enricher --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=insulin_junkie/uk-postcode-enricher",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

```json
{
    "openapi": "3.0.1",
    "info": {
        "title": "UK Postcode Validator & Enricher",
        "description": "Validate and enrich UK postcodes with region, district, constituency, lat/long, NHS region, LSOA, MSOA and more. Uses the free postcodes.io API — no API key required.",
        "version": "0.1",
        "x-build-id": "Azcxs8u3VNVrFZfwd"
    },
    "servers": [
        {
            "url": "https://api.apify.com/v2"
        }
    ],
    "paths": {
        "/acts/insulin_junkie~uk-postcode-enricher/run-sync-get-dataset-items": {
            "post": {
                "operationId": "run-sync-get-dataset-items-insulin_junkie-uk-postcode-enricher",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        },
        "/acts/insulin_junkie~uk-postcode-enricher/runs": {
            "post": {
                "operationId": "runs-sync-insulin_junkie-uk-postcode-enricher",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor and returns information about the initiated run in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/runsResponseSchema"
                                }
                            }
                        }
                    }
                }
            }
        },
        "/acts/insulin_junkie~uk-postcode-enricher/run-sync": {
            "post": {
                "operationId": "run-sync-insulin_junkie-uk-postcode-enricher",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        }
    },
    "components": {
        "schemas": {
            "inputSchema": {
                "type": "object",
                "required": [
                    "postcodes"
                ],
                "properties": {
                    "postcodes": {
                        "title": "Postcodes",
                        "type": "array",
                        "description": "List of UK postcodes to validate and enrich. Accepts any format — spaces and case are handled automatically.",
                        "items": {
                            "type": "string"
                        }
                    },
                    "useBulkApi": {
                        "title": "Use Bulk API",
                        "type": "boolean",
                        "description": "Process postcodes in batches of 100 for faster results. Recommended for large lists. Disable for single lookups only.",
                        "default": true
                    },
                    "requestDelayMs": {
                        "title": "Delay Between Requests (ms)",
                        "minimum": 0,
                        "maximum": 5000,
                        "type": "integer",
                        "description": "Milliseconds to wait between API calls. The postcodes.io API is generous — 100ms is usually fine.",
                        "default": 100
                    }
                }
            },
            "runsResponseSchema": {
                "type": "object",
                "properties": {
                    "data": {
                        "type": "object",
                        "properties": {
                            "id": {
                                "type": "string"
                            },
                            "actId": {
                                "type": "string"
                            },
                            "userId": {
                                "type": "string"
                            },
                            "startedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "finishedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "status": {
                                "type": "string",
                                "example": "READY"
                            },
                            "meta": {
                                "type": "object",
                                "properties": {
                                    "origin": {
                                        "type": "string",
                                        "example": "API"
                                    },
                                    "userAgent": {
                                        "type": "string"
                                    }
                                }
                            },
                            "stats": {
                                "type": "object",
                                "properties": {
                                    "inputBodyLen": {
                                        "type": "integer",
                                        "example": 2000
                                    },
                                    "rebootCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "restartCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "resurrectCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "computeUnits": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "options": {
                                "type": "object",
                                "properties": {
                                    "build": {
                                        "type": "string",
                                        "example": "latest"
                                    },
                                    "timeoutSecs": {
                                        "type": "integer",
                                        "example": 300
                                    },
                                    "memoryMbytes": {
                                        "type": "integer",
                                        "example": 1024
                                    },
                                    "diskMbytes": {
                                        "type": "integer",
                                        "example": 2048
                                    }
                                }
                            },
                            "buildId": {
                                "type": "string"
                            },
                            "defaultKeyValueStoreId": {
                                "type": "string"
                            },
                            "defaultDatasetId": {
                                "type": "string"
                            },
                            "defaultRequestQueueId": {
                                "type": "string"
                            },
                            "buildNumber": {
                                "type": "string",
                                "example": "1.0.0"
                            },
                            "containerUrl": {
                                "type": "string"
                            },
                            "usage": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "integer",
                                        "example": 1
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "usageTotalUsd": {
                                "type": "number",
                                "example": 0.00005
                            },
                            "usageUsd": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "number",
                                        "example": 0.00005
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
```
