TV licence dodgers tempted to watch the Euro 2004 football will be tracked down, it is warned.
Between January and April, 216 people were caught without a licence in Huddersfield alone.
Now TV Licensing officers are warning people that the crackdown will not stop during Euro 2004.
Deborah Copeland, spokeswoman for TV Licensing, said: "Anyone intending to watch the matches without a licence should think again. Our detection operation will be in full force.
"Our enquiry officers work at all hours of the day - so whatever the kick-off time, people should ensure they have a valid licence or they face a knock on the door and prosecution."
TV Licensing officers use a database of 28m addresses to find out which properties do not have TV licences.
Detection vans or officers are sent to addresses without a licence to see if TV is being watched illegally.
Anyone caught for the first time watching TV without a licence will be offered the chance to buy one.
But persistent offenders face prosecution and a fine of up to £1,000.
* A colour TV licence costs £121.
For information about ways to pay, contact 0870 241 5590 or visit www. tvlicensing.co.uk