Anyone know what this light is called?

[suffolkspark]

presuming its selv then so there must be a tranny hiding in the ceiling

 

[littlespark]

If the gentleman in the Peruvian woolly shirt is the owner, doesn’t he have paperwork concerning the original installation of the light? Maybe who fitted it in the first place.
Even if you find out the make and model number, it could be out of date now and replacements not available.

 

[Richard Burns]

Looking at the end of long bar at the top there is an inner part that is insulated from the outer, the outer is threaded so when it's screwed in the centre part connects to the live. I can't even see how to remove the ceiling part.

I would have thought it was arranged something like this
A bracket (or conduit box) at the ceiling with a threaded rod, over which the ceiling cover plate is placed and a coupler threaded on top to hold the plate and to allow the pendant rod to be connected to the coupler.

 

[Malcolm]

Richard- No it's nothing like that.
I'm not sure when I will be back there but when I do I'll have to bring it home for a close look and try to dismantle.
Thanks for all the comments.

 

[Ian B]

It could be a version of a uniplug system such as Bruck (it's not Bruck though).
If it is, the white ferrule at the top of the rod will unscrew allowing the top to "unplug" from the ceiling socket.
Then unscrew the knurled nut on the socket to release the ceiling plate.