Police are urging van owners to take additional steps to protect their vehicles after four vans were broken into for their tools.
The thefts took place in Sandown Drive, Carshalton; Courtney Crescent, Carshalton; Stanley Road, Carshalton; and Chilworth Gardens, Sutton.
Police have stepped up their unformed patrols and plain clothes operations to catch those responsible and are urging drivers to remain vigilant and to protect their vehicles and tools.