On 25 March 1843 the first tunnel to have been constructed successfully underneath a navigable river was opened. Started in 1825 and beset with difficulties it was the only joint venture between father and son Marc and Isambard Brunel. Originally designed for horse drawn carriages it remains part of the Overground Railway. So well constructed was it that the first refurbishment needed was 150 years later.

On 25 March 1946 Heathrow was officially opened by Lord Winster, the Minister of Aviation, the first aircraft to use the new airport was a British South American Airways Avro Lancastrian named Star Light

Dead cats were a popular missile to hurl at criminals locked in the pillory for their crimes, sadly that entertainment was abolished in 1837

London Glass: The British Museum’s Great Court has 3,312 glass panes-no two are the same; the Gherkin’s 7,429 panes are all flat save one top curved panel

Queen Victoria called Buckingham Palace “so fatiguing” with its 19 state rooms 52 royal/guest rooms 188 staff rooms 92 offices 78 bathrooms

On 25 March 1975 members the National Front, flanked by 2,000 police, marched through Islington protesting against integration with Europe

Sir Francis Galton travelled around the country to devise what he called A Beauty Map of Britain concluding the loveliest came from London

Ye Old Cheshire Cheese were famous for their pies weighing 80lbs from beef, kidneys, oysters, larks and mushrooms could be smelt in the City

On 25 March 1950 on Hampstead Heath 25 Norwegian ski-jumpers made use of a newly erected ski jump blanketed in 45 tonnes of imported snow

Lord Kitchener had his Rolls-Royce painted bright yellow in order that he would be instantly recognised when driving around London

Founded 1672 Hoares Britain’s oldest private bank’s front door only locks from the inside as a director is always available for clients

In 1815 George Wilson the ‘Blackheath Pedestrian’ attempted to walk 1,000 miles in 20 days, a nervous authority called a halt on day sixteen

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.