I got the same notification email from Ofcom, followed the links, and was bewildered by what I read. Although this is unlikely to affect me directly (I'm licensed in the UK, but have not resided there in over a decade, and am unlikely to do so again), I was curious as to the intended and likely impact of the "proposed" changes. They would appear to impose a significant regulatory burden both in terms of testing, compliance and documentation. All in the name of "safety," which can be a means for the restriction of something-- anything--for any reason, related to actual safety concerns or otherwise. Perhaps this is over-reading things, as I really don't know what practical difference the changes will make for UK-based hams. But Ofcom's language, "proposals to vary a wide range of licences to require licensees to comply with the ICNIRP general public limits and keep records to demonstrate how they comply" is not reassuring. I cannot see how this will do anything to encourage ham activity in the UK, and can easily imagine it having the opposite effect.
It would be appreciated if the OP or other UK-based hams might comment on the anticipated effects upon a "Full" license ham in the UK. It's a short hop across the pond, you know, and the inclination of bureacracies to "keep pace" with one another is hardly unknown, so the eventual indirect impact for non-UK hams could be significant.