Thanks for your help lads
Regards
joe

Hi Joe, I assume you want them pre-coloured! Try here
http://www.mastman.co.uk/
under 'Ships Lights'. Pic show some examples. Pics are unfortunately blown up by the site! 🤔 But you can get the idea. Cheers Doug 😎

Hi Joe
These are available now on eBay!
Graham

Hi Joe. I usually get grains of wheat or grains of barley on eBay. I managed to get 10 clear bulbs a couple of weeks back for 2.49 which is half the cost of a single bulb in my local model shop! I make the housings for lights from clear straws cut to size. Hope this helps!
Graham