Kudos Delivered has won a two-year contract with Health Education England (HEE) at Stewart House worth around £400,000.
It has been awarded the new contract, until March 2018, following a competitive tender basis.
The team will provide a variety of catering options including breakfast buffets, lunches and evening canapé receptions.
Nicky Pratt, managing director of Kudos Delivered, said: "This has been a great result for Kudos Delivered. Winning this tender for such an important part of the NHS is something that we're really proud of and we couldn't have done it without our incredibly hardworking team.
"We understood that healthy, innovative food was the goal, and with the help of our team's culinary expertise, we managed to deliver just that with these menus."
He added: "Having the opportunity to cater for HEE at Stewart House for another two years is a great achievement, and we're really happy to have found a partner who shares our core food values."
Kudos Delivered is part of Crown Partnership - a provider of food, venue and event solutions.