Charlie gives an exclusive 'Olympic 2012' tour of 10 Downing Street

10 Downing Street

Restoration and modernisation 

"The architect Raymond Erith was selected to supervise the work, which was expected to take 2 years and cost £500,000. It ended up taking a year longer than planned and costing double the original estimate. The foundations proved to be so rotten that concrete underpinning was required on a massive scale.

Number 10 was completely gutted. Walls, floors and even the columns in the Cabinet Room and Pillared Room proved to be rotten and had to be replaced. New features were added too, including a room facing onto Downing Street and a veranda at Number 11 for the Chancellor.

It was also discovered that the familiar exterior façade was not black at all, but yellow. The blackened colour was a product of two centuries of severe pollution. To keep the familiar appearance, the newly cleaned yellow bricks were painted black to match their previous colour. Erith's work was completed in 1963, but not long afterwards, dry rot became apparent and further repairs had to be undertaken."https://www.gov.uk/government/history/10-downing-street