Fast, reliable access to official UK Standard Industrial Classification (SIC) Codes.

The SIC Code Lookup API returns simple, predictable JSON and is designed for lookup, validation, enrichment, and reporting use cases.

The API provides two core capabilities:

1. Get SIC Description by Code Retrieve the official SIC Description for a given SIC Code.

2. Search SIC Codes by Description Retrieve SIC Codes whose Descriptions contain a given keyword.

Interactive API documentation (Postman): https://documenter.getpostman.com/view/6869909/2sBXc8oPEn

• This API is distributed via RapidAPI
• To execute requests, you’ll need a free RapidAPI account and API key
• Create a free account at rapidapi.com.
• Subscribe to the SICCodeAPI free plan in the RapidAPI API Hub.
• RapidAPI issues an API key immediately upon subscription.
• No additional authentication or setup is required.

All requests are made through the RapidAPI gateway.

Retrieve the official SIC Description for a given SIC Code.

Request: GET /SICCodeAPI/code

Query Parameters:

• Name: code
• Type: string
• Required: Yes
• Description: SIC code

Example: /SICCodeAPI/code?code=0111

Response (200): { "0111": "Grow cereals & other crops" }

Retrieve SIC Codes whose Descriptions contain a given keyword.

Request: GET /SICCodeAPI/description

Query Parameters:

• Name: description
• Type: string
• Required: Yes
• Description: Search keyword (case-insensitive)

Example: /SICCodeAPI/description?description=fishing

Response (200): { "0501": "Fishing", "03110": "Marine fishing", "03120": "Freshwater fishing" }

All successful responses return a JSON object where:

• Keys are SIC Codes (strings)
• Values are official SIC Descriptions

Example { "<sic_code>": "" }

If no matching SIC Code or Description is found, the API may return an empty JSON object or an error response depending on the request.

• All endpoints are read-only
• No request body is required
• Results are deterministic and based on official SIC classifications
• The /SICCodeAPI/description endpoint may return multiple results

• The API is currently available under a free plan with up to 10,000 requests per month
• No subscription fees
• No overage charges
• Requests above the monthly quota are blocked
• Higher-volume plans may be introduced if demand requires

For higher-volume usage and pricing enquiries: enquiries@spatialdays.com

• Business classification and validation
• Data enrichment for company records
• Compliance and regulatory tooling
• Analytics and reporting workflows