The company said it was pressing ahead with the sell-off as they were non-core assets which no longer fitted within its light oil-focused portfolio.

BBC: Oil firm Tullow sells North Sea gas assets

Rated Class 1 Division 1 and Class 2 Division 1 this light is fitted with a high performance C4 LED rated at 50, 000 hours of operational life and 180 lumens of output.

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If it is fitted with a shade that reflects light down on to the ground instead of allowing it to escape wastefully into the sky, so much the better.

ECONOMIST: Going, going, nearly gone

Another local firm in Bodmin has already fitted more than 700 low energy LED (light emitting diode) lights at Eden.

BBC: Energy efficiency boost at Eden Project

And under International Civil Aviation Organisation regulations, any structure over 45 metres tall on a flight path or near an aerodrome must be fitted with a medium-intensity aircraft warning light.

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To do so, they developed a submersible fitted with three wide-angle lenses designed to take high resolution images in low light conditions.

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