Last month, BBC1 controller Lorraine Heggessey ruled out that option, in case it affected the quality of the soap and yesterday a BBC spokesman said there were 'no current plans' for such a change.
But Philip Reevell, ratings analyst for the industry bible Broadcast, said: 'It is called Black Wednesday for a reason and this particular Wednesday demonstrates the scale of BBC1's midweek problem.
'The bigger structural problem for the channel is the lack of an EastEnders episode on Wednesday, which leaves BBC1's schedule more vulnerable than any other night of the week.'
Last night a BBC spokesman said: 'Our strategy for a Wednesday night is centred around specialist factual, current affairs and natural history and we have no plans to change that.
'We offer an alternative to the other channels on that night and we believe in our strategy.'