Choose a workable sequence
Check destination and transit requirements through official travel advice and the relevant consulate.
Resolve any dual-nationality alignment requirements before starting the British passport application.
Obtain the name-change evidence and any proof of use required for your application.
Apply for the passport and keep the application reference.
Avoid committing to travel while the document is unavailable.
After delivery, check every printed detail before updating passport-linked bookings and permissions.
Keep confirmations from the airline, insurer and any entry-permission authority together for the journey.
Adapt this sequence to any existing booking and to the order required by your passport authorities.