The Natural Philosopher wrote:

I am geting 50W 12v units at 74p each.

Can I ask where from? Any good? The ones in our kitchen blow even more
regularly than I'd expect from incandescent bulbs and are costing me a
fortune. I find the worst offenders are Screwfix's; currently using
Wickes at £2.50 a pop and aren't a whole lot better.

David