They said the multi-year partnership will allow Morrisons to bring thousands of fresh food, own-brand and branded products to Gopuff's platform.

Gopuff currently serves customers in more than 20 cities in the United Kingdom.

Bradford, Northern England-based Morrisons is Britain's fourth-largest supermarket group after market leader Tesco, Sainsbury's and Asda.

A raft of new firms, including Getir and Gorillas, are offering deliveries within 15 minutes of ordering, prompting traditional supermarket groups to rethink their business models.

Last October, Tesco teamed up with Gorillas.

Morrisons, taken private last year by U.S. private equity firm Clayton, Dubilier & Rice in a 7 billion-pound ($9.2 billion) deal, trades from 497 stores.

Morrisons also has partnership deals with online supermarket Ocado Group Plc, Amazon.com Inc and Deliveroo Plc.

($1 = 0.7586 pound)

(Reporting by James Davey in London; Editing by Matthew Lewis)