Thanks for the responses everyone, i really appreciate the feedback from you all and the positive comments.
Its really encouraging to know that some of you have been heavy riders at some stage and i'm not the only big guy on a bike. Thanks guys for the info and link to gb155 - the 39stonecyclist, i watched the vid and had a read of his blog, trully inspirational and it just goes to show, one can get great weight loss results from cycling whatever the starting weight.
Several of you have mentioned investing in a pair or two of padded shorts, or even changing to a different saddle. I had intended getting some shorts but couldn't find any my size so thanks for the links MrJamie & Awfulquiet, thats a great help.
@Gravity Aided - thanks for the link to stretching exercises, i don't know if i'd be able to get in some of those positions lol, but will certainly have a go at some of the easier ones.
@Tyke - Thanks for the advice about the suspension lock, i didn't realise it locked, but will certainly try it next time im on the road.
@philinmerthyr - Well done on completing the RideLondon 100 mile ride, its really inspiring that you completed it especially after riding less than a year and starting at a similar weight to myself. Maybe i could set myself the same goal for the 2014 RideLondon event?
Anyway, thanks again everyone for the positive comments and advice, its much appreciated.
Cheers, Mark.