National Trust Director-General Martin Drury inspects the low voltage lightbubs being fitted at Polesden Lacey on 23 October 1996. The NT hoped to save at least £102,000 a year on its electricity bills by switching to the then-new low energy lightbulbs in all its buildings. Polesden Lacey, near Dorking, was one of the first houses to be switched over. 23 October 1996 Picture by Roger Bamber

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Size: 4699px × 3216px
Photo credit: © Roger Bamber / Alamy / Afripics
License: Licensed
Model Released: No

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