Theoretically no because both are within the UK. However, because of increased security in recent years, airlines insist on acceptable photo ID before you would be allowed to board a flight. Contact the airline that you intend to travel with and ask them if they will accept any other type of photo ID other than a passport.
Yes, you are flying to a different country.
Probably. You do not need a pasport but you do need photographic identity. Check with the airline.
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.
No, it's an internal flight. However, some airlines require an officially recognised photographic form of identifiction such as a passport or full photographic UK driving licence.
Yes, babies need a passport to fly internationally.
Nothing else.
Yes. You need a passport to fly anywhere.
Yes, children need a passport to fly internationally.
Yes, children need a passport to fly to Mexico.
Yes, minors need a passport to fly to Mexico.