New contracts to provide dinners and canapé receptions at the Prime Minister's Office have been picked up by four caterers.
Charlton House, which already runs the staff restaurants in the Foreign Office and the Treasury, has been added to the list of caterers called upon to entertain Tony and Cherie Blair and their guests.
Cally B, a Fulham-based caterer run by Lady Blennerhassett, has renewed its contract.
Of the other eight bids received, London caterers Juliet Graham of Wandsworth and Mosimann's Academy of Battersea were also both successful.
The estimated total value of the one-year rolling contracts is £35,000. The contracts are financed by European Union funds.