Tourism information offices and desks in London
Tourist information offices, guidebooks, maps, and more
Visitor information for England and the U.K.
Tourist information, guidebooks, maps, tips for niche groups (students, LGBT, seniors, disabled, etc.), and more
The Queen doesn't need a passport. Since all British passports are issued "In the name of Her Majesty," the Queen can just vouch for herself—though her husband Philip, son Prince Charles, and everyone one else in the household do have passports.