Southwark Street was closed to traffic for more than three hours on Saturday after a police car was involved in a collision whilst responding to a 999 call.
Southwark Police confirmed that a police car was involved in a collision with a car driven by a member of the public at about 4.15pm on Saturday.
The collision between the marked police car and a blue Mini took place outside the WHSmith store. A phone box was damaged in the crash.
"The collision occurred whilst the police vehicle was responding to a 999 call," said a Met spokesman.
"The officer (male) driving the police vehicle and the driver (female) of the other vehicle involved were both taken to a south London hospital with injuries, although they were not thought to be life-threatening."
A police investigation into the collision continues.
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