Little Theatre of Great Britain: littletheatreguild.org/
And their facebook group: LTG Fb Group
The Little Theatre Guild is the umbrella organisation to co-ordinate the development of independent amateur theatres across the UK and beyond. The LTG as it is known, is a vibrant community of over 100 member theatres which has been in existence since 1946. Membership of the LTG is open to amateur theatres that own or lease the theatres in which their productions are staged. Networking opportunities through regional and national conferences together with regular newsletters ensure strong communication on a host of topics.