UK OSA Target ListHow accurate is it?
Confirmed in scope, by size
From turnover and staff numbers in filed accounts where they are tagged, otherwise estimated from the accounts type.Confirmed in scope, by sector
Confirmed in scope, by region
How to read this listHow each organisation is checked, the columns, and tiers
Only UK companies that passed a check of their own website. We crawl UK-visited sites, match the company number on the site to a live company at Companies House, then Claude reads the site's pages and must quote, word for word, who runs it and what users can do. A program confirms every quote is really on the page. Anything not proven stays off the list.
In scope the site's own pages show users can share content with or message each other, and that this company runs it. Open any row to see the quotes and the pages they came from.
Sites run by a different company, sites where users can only comment on or review the company's own content (exempt), sites with no user features, and sites we could not read. The Overview shows how many of each.
| What we know | Points | Why it matters |
|---|---|---|
| Size | 1 to 5 | Larger organisations carry more risk and can fund membership. Enterprise 5, large 4, medium 3, small 2, micro 1. |
| Verified on the site | +2 | Every listed organisation has quoted proof, so all score this. |
| Company not confirmed | −1 | The service is proven, but we could not confirm which company runs it, so there is more work before outreach. |
| Likely child access | +1 | Children's duties add the most work, and the most need for help. |
| Named by Ofcom | +2 | Categorised or under Ofcom action, so they already know they must act. |
| High UK reach | +1 | Among the 10,000 most visited sites in the UK. |
| OSA no. | Organisation | Size | Checked | What users can do | Ofcom | Tier | Stage and owner |
|---|
The targets (in scope and needs check) by sales stage. Click an organisation to open its details, or drag it to another stage. Each column shows its 40 highest-priority organisations.
| Name | Source | Category or licence | Status or outcome | Users interact? | Website |
|---|
Measured accuracy
How the hit rate is measured
A random sample is drawn from every size band. A person checks each record against the scope rubric: is this the right legal entity, does the service let users interact, does an exemption apply, is it UK-linked. Precision is the share of checked records where the verdict was right. 100 checks give a margin of about six points either way at 95% confidence; publish the figure once precision is 90% or better.
Waiting for a check
People with access
After adding someone, send them the site address. They sign in with their email; no password is needed.Load data
Import a load file prepared by Claude. Organisations are updated in place, so stages, owners and notes are kept.
Hit rate sample
Draw a fresh random sample for checking, spread across size bands and verdicts.