BMA chairman Dr Hamish Meldrum wrote to health secretary Alan Johnson last week to express the BMA's ‘serious concerns that [the report] is not legally deliverable under current regulations'.
Members of the GPC would not be drawn on the grounds for the challenge.
But GPC chairman Dr Laurence Buckman noted that the correction factors which the DDRB erodes had been promised ‘in perpetuity'.
The contract represented ‘a legally-binding framework, which cannot retrospectively be altered', he said.
DoH lawyers are considering their response.
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