David Cameron needs to «get real» and ditch his «surreal obsession» with opening GP surgeries seven days a week, a senior GPs’ representative says.
The British Medical Association’s Dr Chaand Nagpaul said GP services were already at breaking point.
He will tell a conference that pledges to recruit 5,000 GPs in England would «fail dismally» as doctors were fleeing the profession.
The Department of Health said it was an «overly negative, pessimistic view».
During the election campaign, the Conservatives pledged access to GPs between 08:00 and 20:00, seven days a week, by 2020 in England.
The party also pledged everyone over 75 would get a same-day appointment.
But the proposals have been lambasted in the first major speech by GP leaders since the election.