The GEC Z5670 is a post-top lantern for GLS lamps, but this page covers all of the lanterns in the GEC Z5670 series of lanterns.  They could run lots of different lamp types, and they had a GRP canopy and a polycarbonate bowl.

Weybridge, Surrey

This GEC Z5670 is in Weybridge, Surrey, it’s believed to be GEC Z5678, which runs 35w SOX lamps. It’s on a Stanton and stately concrete column.

Addlestone, Surrey

This GEC Z5670 is in Addlestone, Surrey. It’s unknown what lamp type it runs, but there are a few of them in the same area.