New Year Resolution: British Expressions(1)

On the last business day of Jan-2015, I finished the first round of a new year resolution that I had started with a colleague. We, two non-British people, have decided to learn more British expressions everyday at work.
Some of the interesting ones so far are:British1
1) Bob’s your uncle
2) All mouth and no trousers
3) Send someone to Coventry
4) Football’s a game of two halves
5) An Englishman’s home is his castle

No need to google. For those who can wait, the answers will be revealed tomorrow.