SIC Codes UK
Look up UK Standard Industrial Classification codes, map to GICS/ICB, and search Companies House when sizing markets or profiling competitors.
Overview
SIC Codes UK is an MCP server for the Idea phase that looks up UK SIC codes, maps GICS/ICB sectors, and searches Companies House via agent tools.
What is this MCP server?
- 731 UK SIC codes with lookup and cross-reference tooling
- GICS and ICB mapping from SIC classifications
- Companies House search across a 5.6M-company corpus
- Remote streamable-http endpoint at siccodes.co.uk plus npm stdio package sic-codes-mcp
- Version 3.0.0 MCP registry entry with GitHub source in mcp-server subfolder
- 731 UK SIC codes indexed
- 5.6 million Companies House companies searchable
- MCP server version 3.0.0 with streamable-http and stdio transports
What problem does it solve?
You waste hours jumping between gov.uk references, spreadsheets, and Companies House when you only need a consistent industry code and comparable UK companies.
Who is it for?
UK-focused solo builders doing niche research, B2B positioning, or competitor mapping before they write a landing page.
Skip if: Builders outside the UK who need NAICS-only or non-UK registry data without crosswalk support.
What do I get? / Deliverables
Your agent returns aligned SIC/GICS/ICB labels and Companies House candidates you can paste into validation docs or competitor tables.
- Resolved UK SIC codes with GICS/ICB crosswalk
- Companies House search results for a classification or query
Recommended MCP Servers
Journey fit
How it compares
MCP data lookup server, not a CRM skill or web-scraping agent workflow.
Common Questions / FAQ
Who is SIC Codes UK for?
Indie and solo builders validating UK markets who want SIC, GICS/ICB, and Companies House answers inside Claude Code, Cursor, or Codex.
When should I use SIC Codes UK?
Use it during Idea-phase research when you need industry codes, sector mapping, or company lists before scoping a product or pitch.
How do I add SIC Codes UK to my agent?
Register the remote https://siccodes.co.uk/api/mcp or run the npm package sic-codes-mcp over stdio per your client’s MCP config.