I only know of Shisha Stone, but yeah, you'll need a vouch to get past the doors. London will never be anything like Amsterdam or Barcelona, because unlike them, we're criminals for consuming flower without a Doctor's prescription.

Decent spot, but can no longer recommend due to owner being a tramp scamming people.

Can't say I've ever been, was gonna go on his opening night, but fuck travelling all the way to London from Fife for a few J's. I used to order postals from the guy before Biggy.

There's quite a few about. Though you're not getting access that easy. Need vouches