We tried Marks and Spencer thermals to help save on heating bills

Dianne wore the M&S Thermal Heatgen long-sleeved top, leggings and thermal socks from the range, priced from £10

Marks & Spencer's £12.50 clothing items hailed as so warm they 'help save money on heating bills' - MyLondon

Heatgen™ Maximum Thermal Long Sleeve Top

Reduce Your Home Winter Heating Gas Bills

I compared Asda and Primark thermals to Marks and Spencer and there was a clear winner - Dianne Bourne - Manchester Evening News

I wore M&S viral £16 thermal leggings and I barely needed the heating on' - Rachel Williams - Daily Record

100% Blackout Curtains 96 Inches Long Sliding Door Curtains Patio Door Curtains Linen Textured Extra Wide Curtains Grommet Curtain Drapes for Living Room Curtain Panels(W100 x L96 1 Panel, Beige)

Heatgen™ Medium Fleece Thermal Leggings, M&S Collection

Shoppers rave about £8 M&S fleece-lined tights reviews call the 'warmest ever' - Birmingham Live

Martin Lewis backs 1p challenge to help you save £667 by next Christmas - how it works - LancsLive