Search the UK Companies House register by name or keyword and return matching co
Search the UK Companies House register by name or keyword and return matching companies with company number, register status and a derived is_active, type, incorporation and cessation dates and the register's one-line address snippet. Use this first when you only have a name, then call the per-company capabilities with the returned company_number. Ordering is the register's own, echoed as match_rank — a position, not a relevance score. Use when: Look up a UK company by name.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.eckari.com/v1/companies/uk/search
| Category | Company and compliance |
|---|---|
| Provider host | api.eckari.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.002 | 828 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"limit": 5,
"q": "Tesco plc"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"limit": {
"description": "Maximum results to return (1-50). Default 10.",
"maximum": 50,
"minimum": 1,
"type": "integer"
},
"offset": {
"description": "Zero-based offset into the register's result set for paging. Pass back page.next_offset from the previous response; page.has_more says whether there is one.",
"maximum": 10000,
"minimum": 0,
"type": "integer"
},
"q": {
"description": "Company name or keyword to search for.",
"maxLength": 200,
"minLength": 2,
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}