Over 60 firms have been disciplined for misusing the Green Deal quality mark over the last year, the Green Deal Oversight & Registration Body has reported.

The body’s annual report said that 64 firms had been sent letters to ask them to stop using the Green Deal quality mark, or to modify the way they were using it. It said 55 had removed or amended the quality mark from their publicity material and the remaining nine are still in discussions with the body.