- No. 10
- No. 10Number TenNo. 10 Downing Street; the official home of the British Prime Minister. The expression is also used, especially in newspapers and news broadcasts to mean the Prime Minister and his or her advisers▪ This suggestion won't be welcomed at No. 10.▪ Sources close to Number 10 say there will be no change in the Cabinet.
Dictionary of contemporary English. 2013.