Labour backbench rebellions
Harry says,In fact when was the last time backbench Labour MP's had a rebellion about an issue which affected working class voters?
He has a point. Labour backbench rebellions have on the whole been rather useless. But I think he's overly harsh. It depends of course, on what you believe constitutes issues that 'affect the working class'. I would suggest that the war in Iraq has had a rather large impact, as does things like Air Traffic Control, both of which saw large Labour rebellions.
But sticking to more cliched working-class issues, these probably fit the bill.
1997 - Single mother benefits
1999 - Incapacity benefit
2000 - State pension 45p increase
2003 - Foundation hospitals
2003/2004 - Higher education bill (tuition fees)