Official recruitment figures showed that one in five trainee spots remained unfilled across England following two application rounds for prospective trainees.
GPC chairman Dr Chaand Nagpaul said the figures made it clear that the government's plans for seven-day GP opening and recruiting 5,000 extra GPs by 2020 were 'undeliverable'.
But some areas are struggling more than others. Click on the regions below to compare the fill-rate of trainee posts in each region of England. Darker shades represent areas facing the greatest shortfall.
Regional GP trainee variation