And that’s why cycling is out of the question

Transport Secretary Lord Adonis said: "Parking restrictions may make it impossible sometimes to deliver secure or sensitive documents, or allow people with a high public profile to attend or leave buildings without putting themselves or secure documents at risk."

The Government Car and Despatch Agency keeps chauffeur-driven cars for senior ministers to ride into work, and a pool of vehicles for junior ministers and civil servants. Its drivers also deliver important packages in London.