Thank you for all your help and replies, much appreciated.
Well after much to and froing, I went to book another ticket online but before I did I checked my tickets again. In frustration I again kinda rubbed them in my hands to check there wasn't two together and all of a sudden there was a "pop" noise (like when you pull a freebie off a magazine) and my ticket appeared. The machine hadn't separated it from another ticket as it was stuck to the magnetic strip.
I really can't believe my luck as it never looked as if two were stuck together and I'd already checked each ticket to check, the ticket office hadn't noticed either.
I've learnt my lesson though and I will always check my tickets before leaving the station.Better still I think I'll just pay the £1 to get them posted to me.
Thank you again.