The overall hospitalisation data gets split as U50/50+ and lags behind some of the other data they collate.
This chart is Delta only and it only covers cases until 21st June. England opened the national booking system to the 50+ group in mid-March. Most Delta cases are May/June - the 60-65s were about 90% double vaxxed by then, and the over 70s were around 95%+.
Some health authorities etc have given more recent data since then. Generally the hospitalisations are skewing younger than before, with (of course) a disproportionate number of unvaxxed over 40s. One stat I did read (not sure which report it came from) is that the average age of a covid death is now 70, down from 82 in the last wave - which bizarrely enough is good news. If you're vaccinated.