UK passport holders warned: unsigned passports are invalid for travel

Every Brit needs a valid passport for travelling abroad, and the document generally remains active for 10 years - or five years for children.

At present, a UK passport costs £102 via an online application, or £115.50 using a paper form, while a child's passport is £66.50 when applying online, or £80 with the paper form.

Once your passport arrives, there's one important step you must take to make it valid - otherwise, it simply won't be accepted.