Britain says its ambassador to Zimbabwe has met with government ministers and "made clear that the military should be removed from the streets of Harare."
An embassy statement also condemns the "excessive use of force by the security forces towards demonstrators" in the capital on Wednesday. Zimbabwe's government has said six people were killed and the British statement says "many" were injured.
The statement welcomes President Emmerson Mnangagwa's comments announcing an independent investigation into the violence in Harare. It says all political leaders have a responsibility to avoid raising tensions or inciting violence.