As long as you like, there is no time limit.
Any UK citizen can leave the UK at any time and stay away for the rest of their life, if they want to.
The reverse question is important, how long will the country you go to let you stay there?
A UK citizen has the right to live and work in any EU country for as long as they like. For any other country you will need permission to stay there permanently (visa, residence permit, work permit).
Finally you will need to renew your UK passport eventually. You can do this at a British Embassy by post. You do not need to return to the UK for this.
As long as you like. Remember to renew your passport every 10 years and register your presence, where ever you are, with the local british Embassy.
Take a look at the DVLA site, under Britons Abroad.
Up two six months per year.
2 months
not long enough
The UK only accepts your British passport on arrival and departure if you are a British citizen and they do not care how long is remained of the validity of the British passport.For your return to South Africa: if you are planning to stay in the UK until after the expiry date of you passport, then it is better to renew your South African passport before your departure.
On the outside front cover - no as long as it still allowing the source of the passport to be read anywhere inside then boarder control can refuse its use.
less than 6 months
Philippine passport holder 5 months validity going back to Philippines ?
Yes as long as he is a british citizen
A passport is not needed to travel between the UK and Ireland.
As long as you are considered a British citizen, you can apply for a passport. Contact the British High Commission and check if you have not lost your status.
As long as your are travelling outside of the Unoted States boarder, then you do need a passport.
You can enter your country of citizenship as long as the passport is valid- even if it has 1 day validity remaining. However, as soon as a passport expires, you cannot board the aircraft using that passport.
6 months
I am from Canada How long before i can work in England if i marry a British woman