Back in the day, my local Tesco use to sell wild mushrooms.
Since the lockdown in March 2020, they’ve obviously had trouble getting them in, and have stopped selling them.
On a visit to Oxford earlier in the year, there was a stall in the covered market which was selling wild mushrooms, however I was just passing through on my way to London, so didn’t have the option of getting any.
Locally I have tried a few places, such as farmers’ markets, farm shops, but not really seen the kinds of mushrooms I use to be able to buy from Tesco.