Davey, P., 2009: A generally distributed species in Britain, the larva feeding on bilberry (Vaccinum myrtillus), sallow (Salix spp.), heather (Erica spp.), willowherb (Epilobum spp.), dock (Rumex spp.) and other plants. In Dorset, the moth is local and the principal habitat yielding regular sightings is deciduous woodland on chalky or neutral soil: Powerstock Common, Lyscombe Hill, Fifehead Wood, Yellowham Wood, Melcombe Park, Chase Wood, Kings Wood, Boys Wood. Colonies of the moth were evidently established at Norden and Studland historically.

Many received records when queried, reveal that the recorder was unable to differentiate at the time between Red Twin-spot Carpet and Dark-barred Twin-spot Carpet, so wrote down 'Twin-spot Carpet'.

Recorded in 20 (50%) of 40 10k Squares.
First Recorded in 1933.
Last Recorded in 2022.
(Data up to end 2023)