Because they canāt enforce part L theyāve stepped back a bit and are referencing
https://www.cieh.org/media/3762/cieh-excess-cold-enforcement-guidance.pdf
Iāve got a card to play as my epc assessor will put in writing that the entire loft room meets an averaged U rating of 0.14 I.e exceeding their āwantā of 0.16