The Sign
The sign was made by the Village Sign People and erected in 2017. The main theme is nautical with the coastguards hut in the top left and a kittiwake (seagull) in the top right. Below left is a typical fisherman's boat and lobster pots with a smuggler in the bottom right carrying a barrel of 'grog'. Fishermen's nets can be seen in the spandrels. Topping the sign is probably a reference to the Sizewell PowerStation. Another sign at Leiston also mentions Sizewell.

The Name and Population
Not mentioned in the Domesday Book, but was called Syreswell in1240 and Syswell in 1280. The name means "The spring of a man called Sigehere", from Old English. The village is part of the Leiston Parish with a population of 5,508 at the 2011 census.

Other Points of Interest
The village became the nucleus of the Ogilvie estate in 1859. It extended as far south as Aldeburgh. Sizewell Hall, now used as a Christian conference centre, is still owned by the Ogilvie family. From the end of the war up to the summer of 1955 it housed a mixed, semi-progressive prep school attended, among others, by the theatre critic and biographer Sheridan Morley.

The village is the location of two separate nuclear power stations, the Magnox Sizewell A and Pressurized Water Reactor (PWR) Sizewell B, which are readily visible to the north of the village. A third reactor is being built, Sizewell C.