I have been asked to reply.
62 South Eaton Place is protected as part of the Whitehall security zone because it was my right hon. Friend the Member for Sheffield, Brightside (Mr. Blunkett’s) place of residence during his time as Home Secretary. In February 2008, Westminster city council submitted an application to the Department for Transport to have the Whitehall security zone reduced to Whitehall and the streets leading from it. The Metropolitan Police Service have now agreed with Westminster's application to reduce the security zone. When the Department receives a formal request to amend the Greater London Highways and Road Traffic (Various Provisions) Order 2000 it will do so.