Increased demand in Europe has helped use up Britain's gas reserves since the start of October but domestic use has continued to fall.
A National Grid spokesperson told Reuters: "If you take out exports there has been a four percent drop in gas demand."
They told the news provider that the organisation believes the ongoing economic downturn, which has taken Britain into recession, is "driving it".
Adding: "Across the winter so far, if you correct for weather, we have seen local distribution zone demand down six per cent compared to last year."
In related news, National Grid is investing more than £176,000 in gas infrastructure in London's Bushey Heath and Harrow Weald.
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