Re: UK
Hospital admissions are probably the best thing to look at if you want consistent measurement over the past 6 months. They do however tend to lag cases, and are less sensitive to increases in infection rates in younger people.
For England, they peaked at 2910 on 1st April, and from that point declined at around 3% per day to 25 on 22 August. They are now increasing at around 8% per day, and the most recent number we have is 275 on 21st September.