Over a million games consoles have been sold in the UK during the first half of the year. PS5 is comfortably the market leader, with Nintendo Switch in second place and the Xbox Series S and X snapping at its heels
— Christopher Dring (@Chris_Dring) July 6, 2021
Pretty much lines up with what we already knew. I would estimate roughly:
PS5 ~400-450k
Switch ~250-300k
XBS ~200-250k
Others ~50-100k