Hospital admissions are actually up a little:
https://coronavirus.data.gov.uk/ (parent link of the one you provided).
That said, deaths are still dropping, and have been dropping since November, which was a local minimum in case numbers.
The pertinent fact, I think, is that the UK is vaccinating like crazy, coming up to 1m boosters per day recently (total population just short of 70m IIRC), even 12-18 year-olds are getting jabbed now.
