The major neighborhoods, streets, squares, and landmarks of London
The mighty Tube, or Underground, is London's subway system
How to use the bus and tram system in London
From the Tube (Underground, or subway) and the bus (double decker or otherwise) to taxis, shared "Boris" bikes, and other transportation options in London
Do not buy point-to-point tickets. What you want is an Oyster Card (possibly with a Travelcard transit pass).
Ferries, river boats, and Thames cruises in London
Maps to the great city of London
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.