You can travel up until the year it expires.
You can travel immediately after acquiring a passport.
How long needed on passport to travel to FinlandFinland
Not long if you are in Cambodia and have a passport.
UK passport holders require 6 months left on their passport
You cannot travel internationally with an expired passport. You will encounter incredibly long delays and problems if your passport expires while you travel. If a passport is lost, a temporary passport may be issued but any visas will need to be re-applied for.
A passport is not needed to travel between the UK and Ireland.
Yes. You should definitely be able to visit Cyprus as long as your Jamaican passport has not expired.
You don't need a passport to travel between the UK and the Republic of Ireland.
30 days
As long as your are travelling outside of the Unoted States boarder, then you do need a passport.
As long as you have a passport and the Australian Government has no objection to you entering the country you can get into Astralia.
6 months