They have also confirmed that their next London site will be in Watford.
Part of part of a nationwide drive to open 68 stores in the next two years.
The half price offer is available until Thursday 2nd June.
This is the brand's 109th and 110th restaurants, respectively.
This liuxury restaurant will be opening this weekend with 25% off.
A massive discount off their burgers only for an extended six month period.
Their menu revolves around the concept of slider burgers.
The company aims to hit the big 100th restaurant in early 2022.