The target was illegal scrap metal dealers, but drivers in one area of Reading were caught up in a police crackdown on motoring offences.
Operation Precious led by Thames Valley Police went on for five hours in the town. Penny Sylvester went to find out more.
More top news
Showers this evening then dry overnight.
Showers this evening then becoming dry but cloudy overnight.
The Prime Minister will join hundreds of military personnel in Liverpool on Saturday as the country marks Armed Forces Day.