Scepticism began to take hold in March when it introduced what it claimed was an 'ultra prudent' method for booking the large costs of bidding for contracts. It was the second significant change in Amey's accounting treatment of long-term contracts in as many years and knocked the company into a 2001 loss of £18m, instead of an expected profit of £52m. Amey warned last month that it would miss profit forecasts unless it was awarded the Tube contract this year, raising concerns that it might breach its bank loan agreements.