A redo with the updated deadline:

All websites on which pornographic material can be found, including social media platforms, must introduce "robust" age-checking techniques such as demanding photo ID or running credit card checks for UK users by July.

The long-awaited guidance, issued by regulator Ofcom, has been made under the Online Safety Act (OSA), and is intended to prevent children from easily accessing pornography online.

If:

a) There is credible proof that attempting to access PornHub, from the UK, starting July 25th, requires an age-check

OR

b) PornHub blocks access to UK users, citing the this policy as the reason

then this resolves YES

Further info:
https://www.reuters.com/world/uk/uks-ofcom-sets-july-deadline-mandatory-age-verification-2025-04-24/