Yup looks like strong bloody violence is no longer worthy of an 18 and probably some time as it didn't come up in the BBFCs latest consultation.

[URL unfurl="true"]https://www.bbfc.co.uk/release/fallout-q29sbgvjdglvbjpwwc0xmdiwndaz[/URL]

Would be interesting to see if this were a cinematic release. But so few push for it. Interestingly Deadpool films were a 15 as well so it's consistent.