It's important that you know your passport and visa requirements, which vary greatly depending on your nationality and destination.

Below is a selection of sites that offer excellent information on all aspects of applying for and obtaining visas. Make sure you get all the details you need well in advance of your trip.

Embassy World have contacts for embassies and consulates worldwide. In addition, visa and passport information is available by entering your nationality, country of departure, destination and any countries visited on transit.

You can get all the details you need to renew or apply for a passport at the UK Passport Agency. There is also detailed information on visas, travel advice and contact details for people needing a passport in a hurry.

The Visa Service allows you to apply for passports and visas online be it for companies, travel agents, frequent travellers or holidaymakers. The site also provides a 24hr Visa and Passport information phone line.

Get travel advice, including visa and passport information from the Foreign and Commonwealth Office You can also get practical advice on what to do and, more importantly, what not to do in different countries around the world.