Fifteen Foundation spokesperson Wendy Richmond cited the tough financial climate as the reason for the venture closing.
The operation is expected to close officially in the near future and is currently honouring previous contracts. It had run on the basis that all profits would go to the Fifteen Foundation, and had four permanent staff.
Fifteen Events was formed out of Fifteen, the company set up following TV chef Jamie Oliver's formation of the Fifteen restaurant. Oliver remains a trustee of the Fifteen Foundation but was never involved with Fifteen Events.
The company catered for dinner parties and corporate events, weddings and bespoke cocktail packages, through to large gala and fundraising events.
The Fifteen Foundation released the following statement:
"The Trustees and the Board of the Fifteen Foundation have taken the decision to close Fifteen Events, its small catering arm, as part of a re-structuring programme. It was set up three years ago by the Fifteen Foundation to meet demand for off-site catering and has worked for a number of corporate and private clients.
"Unfortunately the current economic conditions have hit the events/catering business hard and it has decided to close the business with the potential loss of four full-time posts. We are currently working with the team to find employment either within the organisation or elsewhere.
"This does not affect in anyway Fifteen London, the flagship restaurant, nor the other franchises in Cornwall, Amsterdam and Melbourne."