Applying in Hong Kong
Why does the country I intend to visit insist that my passport should be valid for a longer period than my proposed stay?
Ensure your passport is valid for the duration of your trip. When travelling to some destinations, the immigration authorities require that your passport remain valid for a minimum period (usually at least six months) beyond the date of departure. Ask your travel agent, or contact the authorities of the country/territory you propose to visit.
Travellers should also check the Foreign Office travel advice for the country you are visiting. The general public telephone number for the FCO Travel Advice is +44 845 850 2829.