Well I don't know if it had any bearing on it but he said I obviously listen to a lot of music as my timing was pretty good it was obvious i could sort of listen to the structure of the songs I like.
Also when I enquired about the lessons he asked me what I wanted out of them. I said I wasn't interested in people hearing me play, I just want to have an educated go at songs I like and have the ability to try it.
He seems like a nice bloke anyway so I've booked an hour next Thursday.
Edit...
I would also imagine that when he asked me some bands I like (blitzkid, Murderland, dollyrots, misfits, dead Vampires etc...) He would guess I'd soon lose interest with learning songs by, for example, The Who.