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
Sunday's weather for the east with Philippa
Sunday's weather for the west with Philippa
The latest weather update for the east with Philippa