On 30 June 1992 Margaret Thatcher took her place in the House of Lords as Baroness Thatcher of Kesteven. In her first debate she spoke out against the government on the Maastricht Treaty. She would be proved right, its adoption gave rise to Ukip and ultimately the Referendum to leave the EU. She was Britain’s first woman prime minister in 1979, and the longest serving prime minister of the 20th century.
On 30 June 1937 the British emergency number 999 was introduced, the first telephone system of its kind in the world
On 30 June 1967 a sky-blue Bentley collected Mick Jagger from the Scrubs and Keith Richards from Brixton after doing time for drugs
On 30 June 1894, under a cloudless sky, Tower Bridge was officially opened by the Prince of Wales (later Edward VII)
On Westminster Bridge Road is the entrance to an old station from where passengers took their last journey to Brookwood Cemetery
The Ayrton Light atop Parliament’s Elizabeth Tower (known as Big Ben) shines to show that the House is sitting
When Ellen Terry visited Whistler’s Chelsea studio Oscar Wilde described seeing her arrive in the full regalia of Lady Macbeth
King James I kept elephants in St James’s Park. They were allowed a gallon of wine a day each to get through the English winter
Dash to Pope’s Road, Brixton in September to watch the Brixton Bolt, see if you can beat Usain’s 100 metre time of 9.58
Jubilee Line trains have been decorated for the Jubilee – appropriate really, as line originally named for 1977 one (hence silver on map)
The Castle pub in Farringdon holds a pawnbrokers licence granted by George IV when he left a heirloom in lieu of a gambling loan
During the Great Fire of London, Samuel Pepys buried his prized possession, a chunk of parmesan cheese, in his back garden
Trivial Matter: London in 140 characters is taken from the daily Twitter feed @cabbieblog.
A guide to the symbols used here and source material can be found on the Trivial Matter page.