Why on earth is disabled access even an issue here?
It should go without saying that those in wheelchairs should be accommodated - as other's have suggested, that is the law of the land.
It's the 'pack the punters in like sardines so we can make losta wonga' philosophy which is so bloody offensive - whether demonatrated by the artists or their managers.
If it is the latter, that could be quickly cleared up by the Unthanks (what an apt name) finding a more compassionate agency to represent them.
Jim Carroll