Where in the world can you work without requiring a visa when you are British Citizen?

Question

Where in the world can you work without requiring a visa when you are British Citizen?

Answer 1

you will need a visa no matter where you will go, it is the law, in all countries,

Answer 2

Any EU country (that's 27 to choose from).

Apart from that, every country will require some sort of work permit/work visa.