A NEWLY released letter from former Woodford Green MP Winston Churchill reveals his annoyance on discovering his Whitehall headquarters were not bomb proof.

In the September 1940 correspondence, on display at the Cabinet War Rooms, the then prime minister complained he had been "sold a pup" and that the building "cannot be made bomb-proof in any sense".

However, Mr Churchill - who is immortalised by a statue on The Green in Woodford Green after 40 years representing his east London constituency - continued to work from this bunker during the Blitz.

The Cabinet War Rooms, now open to the public, were used as an underground command centre throughout the Second World War.

Built close to Downing Street in Whitehall it allowed the prime minister to stay in central London during air-raids.

But an exhibition opening next month demonstrates how vulnerable this building was to attack.