You could try advertising on
http://www.proshareclubs.co.uk.
This is where I got the draft rules and constitution when our club started about 13 years ago. At the time most of us worked for the same organisation and we got sick of talking about work, football, politics etc in the pub. Our club was called the MarkeTears Investment Club (
which you might Google :-) ). That club's members eventually decided to cash in our profit and disband. By then some of us had formed another club, Plan B Investment Club, which is still going strong and currently showing about 20% profit.
Good Luck
DaveT
In Sunny South Yorkshire