The incumbent, the 15th holder of the title, is Martin John Rees, the Baron Rees of Ludlow, a cross-bench peer and former Cambridge academic known for his work on gamma rays and black holes. The ...

Visitors to the world-famous Meridian Line at the Royal Observatory in Greenwich, south-east London, are to be charged for the first time in 10 years. Entrance to the building's courtyard ...

There are 24 time zones. There is an imaginary line running through the UK called the Prime Meridian. It runs through a place in London called Greenwich. The Prime Meridian splits the world into ...