Right, I may be able to get hold of a full se trim now, so if anyone is interested:
Full M Sport electric seats with door cards (extra tweeter in the rear ones) less the seat belt tensioners = £650.00 collected
Black leather split arm rest = £100 collected or £115 delivered.
I should be picking up the se trim next week so will be swopping interiors over soon afterwards. I'll even un-pin the additional wires you need to make these work in a non-electric seat E91.