Envision Licensing Ltd.
ìOur officers use computer systems, a fleet of detector vans and hand-held detectors to track down and prosecute people who use a TV without the right licence.î
ìAt the heart of our operation is the TV Licensing database, one of the largest in Europe. It has details of over 22 million UK addresses.î
ìWe can detect a TV in use from 30 metres away . . . Not only will we be able to see where the television is and whatís being watched on it, weíll know on the spot whether itís licensed.î
http://www.tv-l.co.uk/home.html