Hello and welcome.
I only recently joined the forum and like you am looking to build my first GT40. I joined the GT40 enthuisists club (gt40enthusiastsclub.com) three weeks ago at their monthly Surrey regional meeting. They certainly made me feel very welcome and I actually got to sit in a few (Tornado seemed v popular). I believe the next meet is on Wednesday 9th May 7.30pm at The Manor House Hotel, Newlands Corner, Guildford GU4 8SE. I have also sent you a pm.
Regards John