Lightbox Tubes

[Simon Gulliver]

I have a Hancocks Studio A3 lightbox which still works fine but one day will need new tubes.
I recently tried to get spares for the original Philips TLD 15w/950 fluorescent tubes but no joy. Philips can't be bothered to reply and anyone else I've contacted says there is no modern equivalent.
Any suggestions?

 

[Simon Gulliver]

Just in case it helps anyone in future, I found a source for the tubes at www.techlamps.co.uk
I suspect they would have other obscure stuff too.