MDP Wethersfield is a Ministry of Defence facility in Essex, England, located north of the village of Wethersfield, about 6 mi north-west of the town of Braintree. Originally a RAF station, the original accommodation areas have now been converted to become the headquarters and training centre of the Ministry of Defence Police. It started as RAF Station Wethersfield opening in 1944 and during World War II it was used by the Royal Air Force and United States Army Air Forces.