It is advisable that all passports have at least 6 months validity left to run before departure. Some visas are valid for six months & if you do not have this period available on your passport, or it is damaged, it could result in a visa or flight refusal.
Information and links below are for British passports.
How to obtain a passport
For a fast and efficient service, Travcour (UK) Ltd is an official agent of the Her Majesty's Passport Service and as such we are able to obtain and attend appointments on your behalf for passports applications. In order to apply for you, please provide the documents listed on the appropriate order forms linked above.
Travcour UK Ltd will book and attend an appointment on receipt of all documents. For the express service, the new passport is available 24 hours from the appointment. For the standard one week service, the Passport Office will post the new passport to the address provided on the application form directly.
For further passport information visit www.passport.gov.uk