Patty & Bun’s forthcoming Borough site will be its most ambitious yet, and see the brand unveil a full breakfast and coffee offering for the most time, MCA has learnt.

Founder Joe Grossman said the site on 19 Borough High Street would be like two in one, with grab and go style model in the ground floor in the mould of the Liverpool Street site, and a high ceilinged dine-in space downstairs like the St James St site.

Grossman, who is also preparing to launch in BBC Television Centre, said Patty & Bun’s first major high street site unlocked the possibility of a full breakfast offer for the first time.

The menu will include items such as tater tots – a hash brown type grated potato set in duck fat and deep fried – sausage, bacon and vegetarian patties, and omelettes with tomato compote, as well as filter and expresso coffee from Allpress.

Grossman told MCA: “We’ve got great neighbourhood gems and great central London sites, so when the opportunity arose in Borough, I thought - we need this.

“I’ve always wanted a site in the south, and for me it’s like going full circle, because I first dipped my toe into F&B at Roast in Borough Market.

“The site is going to be almost a two in one, with a super hardcore streamlined version of Liverpool St, geared towards breakfast and takeaway on the ground floor, and downstairs there will be an amazing five metre ceiling, 40 cover pimped up version of James St.

“In terms of the position, pitch and amount we’re trying to do, it’s our most ambitious site yet.

“I love the idea of challenges and this is a super exciting site one a great pitch. If we get it right, it will be great, but need to make sure we learn all the lessons.

“We are really excited to be doing breakfast, but we have to nail it. It has to be accessible, and it needs gravitas and a ‘cravability’ factor.

“Patty & Bun is known for eat and takeaway burgers and great vibes, and the hardest thing is you’re trying to change the identity of what we do at the site. If you don’t do it to best of ability and for right reasons, there’s no point.”