Try jw org and use 'lookup' tab.
Please consult the Watchtower website (see link below) under the appropriate tab. Manchester UK is 1st-3rd July 2011
Every weekend between 22nd June 2012 and 10th August 2012 depending on language.
You will need to contact the Branch office AUSTRALIA PO Box 280, Ingleburn, NSW 1890.
I am a Jehovah's witness but i am in a Spanish hall so the dates maybe diff. from where ever you go.