Could someone identify this shower mixer valve, please?

[NerdNot]

I have done several internet searches to try to identify it to no avail. The shower was getting cooler by the day requiring the temperature tap to be turned up and up. I suspect that the thermostatic valve needs cleaning but I would like to find out what valve it is in case I need spares. I installed it in the 1990s and bought it from an upmarket bathroom store - it wasn't cheap. I think the make started with a T and was something like Thorocks. I managed to unscrew the two chrome tubes on the diverter valves but couldn't undo the middle one. Eventually I wrapped it in double sided tape, a la Blue Peter, and got it to turn but it doesn't seem to unscrew. The nut which holds the valve in appears to be a huge 52 mm across flats so I shall purchase a Land Rover wheel nut box spanner for six quid and hope that will do the job.
If you can help I shall be very pleased. Thank you for your effort even if you can't identify it.

 

[Gasguru]

Can't see the image

 

[flameport]

Copy/paste or drag the image into the thread.

Not necessary or desirable to use external sites for images.

 

[denso13]

I saw it earlier but it has gone now.

 

[NerdNot]

Thank you Gasguru, Flameport and denso13.
Hmm. I didn't use an external site. I did paste it into the thread directly from my Google photos and it is still showing on my computer. I'll try pasting it here:-

It is visible to me. I hope it is visible to others now.

 

[ianmcd]

Just e-mail that pic to the shower doctor, they will tell you what it is and will sell you one probably

 

[flameport]

I hope it is visible to others now.

It isn't. You are pasting a link to the image in your Google photos, not the image itself.

 

[NerdNot]

Thanks for that flameport. I did a "copy photo" though, not copy link and when I view this page I get the image not a link to click on. I've tried to drag and drop but that doesn't seem to work - it drags OK but won't drop and I looked at the whole album thing before I started posting but couldn't work it out. This time I've found something that suggests I can uploaded the image. Did that work, please?

 

[Alec_t]

Now we can see it.

 

[NerdNot]

Hooray! Thanks for letting me know Alec-t. Now I wonder if someone will be able to identify it. At least folk now have a chance.