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Lighter Later is lobbying hard for a change to the way the nation sets it clocks by shifting them on an hour throughout the day and has identified 2012 as the possible start for a three-year trial.

It claims that the resultant lighter evenings throughout the year would reduce greenhouse gas emissions, boost tourism and cut road deaths to name just three benefits.

David Cameron has not ruled the idea out - but has challenged Lighter Later to prove that it has the support of the general public before his Government takes it on.

As the clocks fall back, presenter Sarah Moore takes to highways and byways of Pembrokeshire, where both tourism and farming our economic mainstays, to sample public opinion to see if there is an appetite for the idea.