Schreder/Urbis Stratos SON lantern in London (night shot)

Spotted yesterday, in a small pocket of SON lanterns miraculously surviving in central London - there were even some old MRL6 lanterns on the same stretch of road that must be really quite old now! These lanterns used to be very common in London before LED took over like a plague... I have forgotten who manufactured them, but they have a Schreder/Urbis look about them? (Edit: Correct, they are indeed a product of theirs, the "Stratos".)