Comment by andrewaylett

It's fairly prevalent, but actually the UK government gave up on replacing CE a couple of years ago: https://www.gov.uk/government/news/uk-government-announces-e...

I'm sure the companies who put effort into adopting UKCA were really happy to have put in that effort :P. Even if it's I hope not as onerous as adopting it (or CE) from scratch, as they both have quite similar (if not originally identical?) requirements. It seemed more intended to give the impression of Brexit success than of actually making a difference to anything.