Thanks to a comment from a current resident (below), it can be confirmed this flat is still called Thirsty Boys, not Maiden Thirsty, as referenced on the mural.
This sign, BΔΞ, has been made using a skateboard deck. The Greek text is underscored by, what appears to be, three Speights stars.
The Greek letters (Beta Delta Xi) represent a fictional fraternity – the same name was used in the popular movie American Pie.
A beautifully executed sign that complements the Adventure Time mural on the back fence. The mural has been in situ for a couple of years.
Well they do look a bit like fridges with their grey monolithic facades. The Fridge is allegedly a male resident flat and the Fridgette a female resident flat. The Fridge features in the 2008 documentary, Old, Cost and Costly, when the tenants at the time were having issues with the state of the house.