Well i went back to the bike shop on Sunday, the Cube 2013 model was gone, sold on the saturday, so bit pissed off with that, spoke to another guy in the shop and give him the story of my previous 2 visits, he got out the 2014 cube which was a size 58, and lo and behold, he siad it fitted me perfectly.
Got a feeling that the 2nd sales guy had it earmarked for a mate as when i went in the 2nd time, the price ticket was not on the bike but on the till.
Think i might go for the 2014 model, as he will knock £50 off it, going in tomorrow as i know one of the helpful / informative lads is in then.