We tried Marks and Spencer thermals to help save on heating bills
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Dianne wore the M&S Thermal Heatgen long-sleeved top, leggings and thermal socks from the range, priced from £10
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Marks & Spencer thermals - M&S seeing huge uplift in sales of these winter thermals
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Marks and Spencer shoppers 'haven't turned the heating on' since buying £12.50 thermal tops - Manchester Evening News
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M&S thermals help woman keep heating off for hours in 'impressive' test - Daily Record
Heatgen™ Maximum Thermal Long Sleeve Top
2pk Heatgen™ Thermal Light Leggings, M&S Collection
100 Denier Thermal Heatgen™ Opaque Tights, M&S Collection
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16 M&S 'slimming' thermal top shoppers are 'wearing when the heating is off' - Daily Record
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11 Ways To Cut Down On Your Heating Bill This Winter
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Money Saving Expert Martin Lewis warning over Boxing Day sales that 'aren't as good as they seem' - LancsLive