Although both Greece and UK are in the European Union you still have to show an up to date passport in and out of both countries.
Yes, you will need a valid passport to leave Greece (Athens) and enter the UK (London)
You do not need a passport to fly from London to Newcastle-upon-Tyne, as both locations are in the UK, however it is always best to take your passport with you just in case.
Yes, always.
No you need a passport.
It is regarded as an internal flight, but you should bring a passport with you any time you are flying.
Probably. You do not need a pasport but you do need photographic identity. Check with the airline.
Best to fly.
Yes. You need a passport to fly anywhere.
No, you shoudn't because it is part of the United Kingdom.
Yes - and it has been the case for a long time. However, you do not need a visa and it is extremely unlikely you will get your passport stamped
Yes, you require a passport to fly to London Ontario from England. Similarly if you fly to London England from Manchester via Hong Kong you will need a passport +++ Not sure why you'd fly from Manchester to London all of 200 miles away, via Hong Kong! No, you don't need a passport to travel within the UK, BUT the airports demand ID for security, and your passport is usually the most reliable.
Yes you need a valid passport to fly from Glasgow to Spain.
20