The main LTA website has an excellent area on Mini Tennis and the link below will take you there

http://www.lta.org.uk/Players/Juniors/

There is also a lot of mini-tennis activity happening in and around the County.  First stop is the Tennis East Competition Guide which you can obtain from many affiliated clubs or also by contacting Tennis East on 01223 210111 or This e-mail address is being protected from spambots. You need JavaScript enabled to view it