Right, I know this is not about window cleaning but its for a good cause. The Harrow Gateway Club is a club for young adults with learning difficulties. They have several sets of lights to decorate the place at Xmas. They were only bought a couple of years ago but Homebase where they bought them from don't do replacement bulbs anymore.
Does anyone know of a website selling replacement bulbs? There are loads on ebay but nobody lists the power/ voltage ratings and there are quite a few different types.