In reply to paul walters: Thanks for all the advice guys (and girls). I'll be using a guiding company(most probably Icicle Mountaineering) so that I DO get some acclimatisation before the summit day, and also an alternative peak if the weather is bad on the day.
The team that went over this year (which I am now glad I didn't join) allowed no time for acclimatisation at all, which is why most of them suffered some discomfort.
I know I am not fit enough at present, and have started a training schedule to increase my CV fitness. I know too that it's a long way off, but it's a goal with a number of way-points.... Lapland this winter, then Toubkal in April, as well as as many mountain days here in the UK that I can fit in.
If can also start doing something about the altitude at the same time, then all to the better. I'll follow up all the leads. Many Thanks.
Paul W