Unfortunately
"jamming equipment is illegal to use in the UK as it violates section 8 of the 2006 Wireless Telegraphy Act, we are therefore unable to supply jammers to any UK customer with the exception of certain military and government departments who have the necessary authorisation from the UK Office of Communications (Ofcom). Please note that no exceptions can be made on this policy."
Nah, it's a piece of piss:
http://www.globalgadgetuk.com/Personal.htm
Unfortunately
"jamming equipment is illegal to use in the UK as it violates section 8 of the 2006 Wireless Telegraphy Act, we are therefore unable to supply jammers to any UK customer with the exception of certain military and government departments who have the necessary authorisation from the UK Office of Communications (Ofcom). Please note that no exceptions can be made on this policy."