The thorn alpha 8 is a lantern that can come with a aluminium or GRP canopy. The aluminium ones are the older ones, and the GRP alpha 8s are the newer ones. The GRP ones were also sold as the WRTL MRL8.

Hatton Cross underground station carpark

These GRP-canopied thorn alpha 8s are in the Hatton Cross underground station car park. Half of them are Dayburning, which means the photocells are probably not very good ones. Also, the lantern in the background is a 3-chevron holophane V-MAX.

Here is a interesting double-armed column. One of the lanterns run on a SON lamp, but the other one runs on a MH lamp!