Stratus Ex-Lan Lantern Installations
These were not a very common lantern about the UK, usually only appearing as-a-result of private purchase (although I know of one area to use them in small-numbers on a housing estate, and a few other odd ones). They were sold as a SON lantern, from 50W-250W, and could be post-top or side-entry mounted.
Long Eaton
These 8m Stanton twin-arms are located along Lows Lane, one of which supports two Stratus Ex-Lan lanterns. Thank you to AgentHalogen_87 for providing the first image:
A close-up of the right-hand lantern:
