The network is aware of just one computerised booking system for village halls and community centres and that is the Avalon system. Some five or six halls use it in Dorset. A free trial version is available to try before you buy.
You can find out more about it here: http://www.avalonsoftware.co.uk/about.asp
You can also contact Roger Burfitt at the suppliers (Avalon Software UK Ltd) 08454 302233 or 07762 061172