H+J, the recently rebranded Harbour & Jones catering business, has won a five-year contract at London's Dartmouth House.
Dartmouth House, a Grade II* listed mansion in Mayfair, is home to the English-Speaking Union. In addition to accommodating the charity, it also hosts events.
H+J’s services will encompass the restaurant and bar, as well as events catering, in a deal reported to be worth £6m.
The firm will also manage sales and marketing for the venue, and room set-up.
H+J rebranded in October following a sustained period of business growth.