Here's a current list of places that are signed up, more on the way

Bute & Co
Bwyta Bwyd Bombai (3B Cafe)
Coconut Tree
Dusty Knuckle
Fab Burgers
Grazing Shed
Heavenly Desserts
Marco Pierre White’s
Mowgli Street Food
Wally’s Delicatessen
Wok to Walk
Zero Degrees