The Delaunay restaurant in central London King's, operating by Rex Restaurant Associates, achieved turnover of almost £2.4m in its first four months of trading.
Figures published in Companies House showed that the group, founded by Chris Corbin and Jeremy King, enjoyed a 21% rise in turnover for the year to 31 March 2012, thanks in large part to the Delaunay's opening. Total turnover for the year stood at £13.9m.
But Rex also made a pre-tax loss of nearly £3.8m, compared to a pre-tax profit in the previous year of almost £3m.
The Delaunay made operating losses of just over £1.2m, including £534,000 related to pre-opening costs. Other pre-opening costs related to new restaurants Brasserie Zedel on Sherwood Street near Piccadilly Circus and Colbert on Sloane Square.
In early 2014, the group is planning to open five-star boutique hotel, the Beaumont on Balderton Street in Mayfair.
Rex Restaurant Associates said it expected to maintain trading levels throughout 2012/13.