Had a good experience with Wolf in the Bunker 51 games they ran, but the actual store customer service is awful.
Originally had a bad experience with them when I went to buy a TM TWS M4, so I went with Fire Support which had a better price AND actually answered my questions. When I made the mistake of making a purchase at Wolf, their aftersales support was even more atrocious, as they kept one of my pistols for a few months during the pandemic in their Hire Purchase scheme, and they actually lost the pistol's magazine and refused to replace it, so I now got a TM pistol in the box with manual and all accessories but no magazine.
Shame that's one of the only stores in London, but thankfully due to the internet you can use other retailers and I'll never have to rely on their crappy-ass customer service ever again.