no
No, you shouldn't need a passport to fly from England to Scotland - although you will need photographic ID like a driver's license. It is best to double check with your airline before you fly.
I believe so, since it's an internal flight. You'll still need some photographic proof of identity in order to fly anywhere.
No, for domestic flights, you will need a form of photographic ID, not necessarily a passport.
Yes
yes
You don't need any form of passport to cross the border between England and Scotland as they are the same nation. It's possible that the airline may require a passport for identification though.
Yes, you need a passport to fly internationally.
Yes, you need a passport to fly internationally.
Yes, you need a passport to fly out of Tijuana.
Your destination is irrelevant. It's your starting point that is important. Check with the airline that you intend to fly with as they all have different rules. As a general rule a passport and not a driving license would be necessary to fly into Scotland. It still depends on your starting point. If that is within Europe, you may not need a passport. As I said, check with the airline that you intend to fly with.
Yes, babies need a passport to fly internationally.
Yes. You need a passport to fly anywhere.