The name of this City of London establishment relates directly to the trade that once existed in nearby environs – namely in sugar.
Located at 65 Cannon Street, the area to the south of the pub was once a centre of the city’s sugar refinement industry.
There were several small sugar refineries there – where raw sugar was taken and transformed into cone-shaped sugar loaves – but these were apparently destroyed when Southwark Bridge was built in the early 19th century.
The now Grade II-listed pub is said to date from the 1830s. More recently, it was part of the Charrington group before becoming one of the O’Neill’s Irish-themed pubs in the late 1990s. It became part of the Nicholson’s group a few years ago.
For more, see www.nicholsonspubs.co.uk/restaurants/london/thesugarloafcannonstreet.
PICTURE: Ewan Munro (licensed under CC BY-SA 2.0)
Exploring London 
I love corner pubs with brick on the top two thirds and tiles on the bottom third, especially with flower boxes running the entire length of the exterior. But the pub sign, the very purpose of this post, can hardly be seen.