Thorn beta 5s have a aluminium canopy, and a acrylic bowl. Thorn beta 5s usually run 26/ 35w SOX, but SON versions were available, but they are rare. Thorn made these in top-entry and side-entry and they made  a few different designs for the canopy.

Sunbury, Surrey 

These 35w SOX thorn beta 5s are in Sunbury, they are top entry and they're mounted on concrete utilities concrete columns 

Here's another column 

This column has a different style of bracket!

This one is just a column with no lantern 

lido car park, Guildford 

this thorn beta 5 is on the lido car park, Guildford. This one has the 2000s style thinner canopy and it is side-entry. It runs on a 26/ 35w SOX lamp.

Here, you can see that the lamp is bent in the lamp holder.

Staines, Surrey 

This thorn 5 is on a footpath in Staines. It has lost its bowl, and the lamp holder and lamp is hanging. This poor thorn beta 5 has definitely seen beta days.

The gear tray has also rusted. The lamp looks like a very old SOX lamp, probably original to the lantern, and it looks like a osram, GE or Thorn lamp. I did have a look around for the bowl but I couldn't find it 

Ascot, Berkshire

These thorn beta 5s are on London road in ascot, berkshire. There are 4 beta 5s, all on Concrete utilities concrete columns. 
this is the first column on London Road. It is on a swan-neck CU column and has a blue Royce-Thompson oasis photocell.

This is the second column. It has a different type of CU bracket, and the bracket is a bit damaged, there is also a small crack at the top of the column. 

This is the third column. It has a swan-neck bracket like the first one. 

The door on this column is loose, so I lifted it up and i saw the cutout and the cable that goes to the lantern.

This is the fourth, and last column on this road. It is on a much newer CU concrete columns and the lantern is probably original to the column. Unfortunately, this lantern has a corncob LED lamp in it, and the lamp has failed, so the lantern keeps flashing. This is the only lantern that still kind of works.