The 28,000 sq ft facility in Weybridge will be split into equal sized units, baring the names of DWS Weybridge and DWS Brooklands. The latter will operate as a dedicated centre for RSA.
Former Stratstone staff will remain at the site and DWS will maintain approval status for Aston Martin, Jaguar and Land Rover at the centre.
Stephen Field, DWS group managing director, said: "The acquisition of this operation has enable DWS to continue on its strategic growth plan.
"This places the company well on its way to being the London solution for insurance companies to procure vehicle repairs inside the M25," he added.