I dressed all over in M&S thermals to see if it saved putting the

This lightweight long-sleeved thermal top is designed to keep you extra warm when the temperature drops. Heatgen Plus™ fabric is brushed on the inside

Heatgen™ Medium Thermal Long Sleeve Top

Richard Blackledge - YorkshireLive Online

Heatgen™ Medium Thermal Long Sleeve Top, M&S Collection

M&S thermals are saving people from turning on the heating this winter

Thermal Textured Half Zip Running Top, Goodmove

Heatgen™ Medium Fleece Thermal Top, M&S Collection

Ikea winter sale on everything from Christmas decorations to garden furniture - Plymouth Live

I tried B&M's cheap thermals and they rival M&S for keeping warm - Manchester Evening News

Modal Rich Funnel Neck Crop Sweatshirt

M&S' 'cosy' £29.50 autumn jacket in four colours that is 'ideal for cooler days' - Daily Record

Heatgen™ Medium Fleece Thermal Top, M&S Collection

Stay warm on cooler days with this lightweight Heatgen Plus™ thermal top. Long-sleeved style with added stretch for your best fit. Made from a

Heatgen™ Medium Fleece Thermal Top

Shoppers excited by 'cosy collection' at M&S which saves you from putting the heating on - Mirror Online