The rise is understood to be the result of a last-minute attempt by contractor Balfour Beatty, to increase its price. The cost for the centre was originally estimated at £75m when London bid for the Games.
The ODA said yesterday that allowing for inflation and VAT, which were omitted from the bid book, the price of the swimming pool complex had risen in real terms, but that the cost was in line with the revised budget published in March last year.
The ODA also said that the velodrome has increased fourfold since the bid to £80m, double the £40m the Olympics minister, Tessa Jowell, told parliament it would cost five months ago.
