Redbridge PCT agreed last September to set practices a benchmark of 122 routine GP appointments per 2,000 patients per week.
Monthly capacity audits have shown a 17 per cent increase in the number of appointments offered since the target was agreed.
But GPs have said that the next benchmark, of 192 appointments per week by June, is not achievable.
Dr David Shubhaker, Redbridge and Waltham Forest LMC chairman, said: ‘Access is an issue, and we will help them with it. But this is too much.'
The PCT now says it has no plans to introduce the higher target for the foreseeable future.
It has also backed down from a proposal that all qualifying appointments must be with a GP, and agreed to consider counting other types of appointments towards the target.
The GPC has advised practices not to tell PCTs how many appointments they offer.
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