70%
True

there are approximately 400,000 private hire and black cab drivers in the United Kingdom.

Department for Transport statistics recorded 381,100 licensed taxi and private-hire driver licences in England alone as of 1 April 2024. Adding Scotland, Wales and Northern Ireland, a UK-wide figure of 'approximately 400,000' is a reasonable approximation.
Checked Wed 1 Jul, 09:58 · Broadcast: PMQs: Prime Minister's Questions - 17 June 2026

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