These mammoth fixtures were designed for high-mast lighting, having been able to run 400W-1000W SON or metal-halide. They are diminishing in numbers nowadays thanks to replacement with newer LED fittings, leaving few still standing.

Burton-upon-Trent

These high-masts light the grounds of Sovereign Business Park. Previously, they may have been part of the railway depot next-door. These are believed to run 400W-1000W SON lamps.