On 4 December 1952, a deadly smog created by the smoke soot and sulfur dioxide from factories, cars and coal fires in local homes began to hover over London, which continued for four days, leading to the deaths of at least 4,000 people.

On 4 December 1947 the first Norway spruce was presented to London by way of gratitude for Britain’s support in World War II

Workhouse Rule 15: No person of either sex be allowed to smoke in bed or in any room of the house upon pain of being put in the dungeon 6 hours

London’s biggest private home is Witanhurst, on Highgate West Hill: 65 rooms, including 25 bedrooms, a gym and a library, and plans underground cinema, beauty parlour and car park

The Bethlehem Royal Hospital is world’s oldest institution specialising in mental health was founded in 1247 near Bishopsgate, in 1800 the hospital moved to Lambeth, it now houses the Imperial War Museum

Queen Victoria was offended when a 14-storey tower blocked her view of Houses of Parliament it led to a Bill capping all buildings to 80ft

The ArcelorMittal Orbit, a 115-metre-high (377 ft) sculpture and observation tower in the Olympic Park in Stratford, East London, is Britain’s largest piece of public art

London’s first sandwich bar, Sandy’s, opened in Oxendon Street in 1933, the greater informality of eating soon spread throughout the capital as the culture of fast-food was established

Spurs’ first competitive match was versus St Albans in the London Association Cup in 1885, Spurs won 5-2

Harry Beck’s map was considered too big a departure from the norm, but the public liked it and it became official in 1933

Founded in London in 1670, the Hudson’s Bay Company is the world’s oldest chartered company and Founded in 1694, the Bank of England was the first privately owned national bank in any country

During he 1920s and 1930s Aberdeen based shepherd George Donald would bring his flock down to Hyde Park grazing his sheep to keep grass level

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.