Greggs, the largest bakery chain in the U.K., is launching an exclusive partnership with app-based delivery service Just Eat, following a successful trial in Newcastle, London and Glasgow. 

The service will immediately expand into Bristol and Birmingham, England followed by Manchester, Leeds, Nottingham and Sheffield by the sprint. A full nationwide rollout will follow. 

"We know from the trials we have carried out that our customers love the idea that they can get Greggs delivered directly to their door and we're delighted to now be working with Just Eat to provide that service to our customers across the U.K. by the end of the year," Roger Whiteside, CEO of Greggs, said in a joint release. 

"We're proud to be the only food delivery app that can bring you the likes of the Greggs Vegan Sausage Roll wherever you are," Andrew Kenny, UK managing director at Just Eat, said in the release. 

Just Eat delivers to about 12 million customers in the U.K. from restaurants ranging from Kentucky Fried Chicken, Subway and Wagamama to local favorites like Toby Carvery and Caribbean favorite Turtle Bay.

The blockbuster merger between Just Eat and Dutch delivery giant Takeaway.com is expected to close within weeks, according to a spokesperson, after a rival $6.3 billion hostile bid by Prospus was rejected earlier this month.

Cover image; Just Eat