Finally!! I have been to Dip & Flip in Clapham.
This burger has made the Top 3 list. It’s basically the best cheeseburger in London which they have then loaded full of gravy soaked roast beef.
Lovely service too and pretty good value for money. And so far the only place in london I’ve found poutine.
Advice: wear dark colours and/or create a giant apron out of kitchen roll.