Gourmet Burger Kitchen (GBK), the Capricorn Ventures-backed group, has extended its 15 minutes lunch guarantee scheme to its new site in Aylesbury.
The scheme guarantees a 4oz burger and fries from £5.95 all served up in 15 minutes flat and if it doesn’t arrive in that time GBK guarantees the next lunch on them.
The new initiative was first launched earlier this year in a selected number of the group’s London sites.
