40 years since Margaret Thatcher became Britain's first woman prime minister in 1979
Margaret Hilda Thatcher, Baroness Thatcher, LG, OM, DStJ, PC, FRS, HonFRSC was a British stateswoman who served as Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990.
25 years since Channel Tunnel opened in 1994
The Channel Tunnel is a 50.45Km rail tunnel linking Folkestone, Kent, in the United Kingdom, with Coquelles, Pas-de-Calais, near Calais in northern France, beneath the English Channel at the Strait of Dover. At its lowest point, it is 75m deep below the sea bed and 115m below sea level. At 37.9km, the tunnel has the longest undersea portion of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at 53.85km and deeper at 240m below sea level. The speed limit for trains in the tunnel is 160km per hour.