Got the same prob.
I've looked at the light fitting. removed the light bulb cover and the bulb, and there's a screw there. Unscrewed that, and then attempted to remove the whole lighting/thermostat unit by gentle persuasion. Not been able to yet. That's as far as I've got.
Could have screw fitting going the other way, i.e a pain in the bum if it is.
Or, below/underneath, the thermostat cover, there are three narrow slots, which may allow teasing out the clips. Gonna try that tomorow.
remember: all electrics are repairable. It Just depends how far you choose to go.
Good luck, and keep us all posted.
BentheBuilder, February 2010