But more than a third of PCTs - 35 per cent - failed to identify any savings at all. This confirms that large variations in the effectiveness of the scheme persist across England.
Of 62 PCTs that responded to a Freedom of Information Act request from GP, 22 per cent admitted PBC generated no savings during 2007/8.
A further 13 per cent could not quantify whether PBC had saved them money or not over that period.
Twenty per cent of trusts achieved more than £1 million in savings, with NHS North Yorkshire and York topping the list with an estimated £6,087,077 saved through PBC in 2007/8.
The DoH is currently working on a 're-launch' of PBC, which has failed to progress as intended since it was unveiled in 2004.
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