Mixed bag around here. My local hasn’t served a drop of real ale since March 2020 whereas it previously always served 1 or 2, but it has always been a predominantly lager drinkers pub anyway. Another pub up the road has seen a considerable change in its clientele towards those who prefer gin, cocktails and Eurofizz. The older regulars simply haven’t returned.
The more reliable ale pubs, however, are still reliable from what I have seen. And I have been impressed by the resurgence of real ale in the last few weeks on visits to Newcastle and Liverpool. As Bucking Fastard suggests, perhaps this is a specific London issue.