---
title: "Every change on HMRC's supervised business register since a date"
method: GET
path: "/api/v1/aml-register/changes"
---

# Every change on HMRC's supervised business register since a date

`GET /api/v1/aml-register/changes`

## Request

- Base URL: `https://meetkatalis.com`
- URL: `https://meetkatalis.com/api/v1/aml-register/changes`
- Auth: API key in header `x-api-key`

Businesses added, removed, returned or whose status changed, newest first, from our diff of each new file (kept since 7 October 2026). 1 credit a page of up to 1,000.

## Query parameters

- `since` string
- `change` 'added' | 'removed' | 'returned' | 'status'
- `limit` integer
- `offset` integer

## Response `200`

since, registerDate, total, offset, changes[] {seen_on, change, mlr_number, name, postcode_district, before, after}

## Other responses

- `400`: A bad date or filter
- `401`: Missing or wrong x-api-key

---

[API](https://skmtc.dev/meetkatalis/apis/katalis-uk-business-intelligence-apis.md) · [All operations](https://skmtc.dev/meetkatalis/apis/katalis-uk-business-intelligence-apis/llms.txt) · [OpenAPI document](https://skmtc.dev/meetkatalis/apis/katalis-uk-business-intelligence-apis/revisions/214b13088f95?raw)