You’ll need to see where those figures are in 10-14 days as there is a lag between case numbers increasing and hospitalisations/deaths/ICU admissions increasing. I keep referring to ourworldindata because with their graphs you can choose which countries you want included and see the timelines because they have parameters graphed over the whole course of the pandemic and you can see how the relationships between the different parameters and different countries very well.
It isn’t as simple as the UK is just testing too much. This is countered by the number of tests per case, positivity rates etc. all of which data is available for you to peruse.