Senior civil servants are concerned the Prime Minister's reshuffle of junior ministers could disrupt legislation for the financial services and markets bill according to the Financial Times.
The concerns centre around Patricia Hewitt who was in charge of the bill. But the reshuffle saw her move from economic secretary at the Treasury to the Department of Trade and Industry.
Quoting a senior Treasury official, the FT says: "Hewitt has been responsible for several very important policy areas and moving her will be very disruptive."
But, the Treasury has dismissed these claims, insisting Hewitt's replacement Melanie Johnson has a good knowledge of the bill having sat on the Commons scrutinising committee for the bill.