The family Cossidae comprises the "leopard and goat moths", of which three occur in Great Britain:
Subfamily Zeuzerinae Phragmataecia castaneae, reed leopard — east & south (Red Data Book) Zeuzera pyrina, leopard moth — east, south & central
Subfamily Cossinae
Cossus cossus, goat moth — throughout (nationally scarce B) ‡
Species listed in the 2007 UK Biodiversity Action Plan (BAP)Butterfly Conservation, 2007. The UK Biodiversity Action Plan – Moths. Butterfly Conservation, Wareham, UK. 4p. are indicated by a double-dagger symbol (‡).
See also List of moths of Great Britain (overview) Family lists: Hepialidae, Cossidae, Zygaenidae, Limacodidae, Sesiidae, Lasiocampidae, Saturniidae, Endromidae, Drepanidae, Thyatiridae, Geometridae, Sphingidae, Notodontidae, Thaumetopoeidae, Lymantriidae, Arctiidae, Ctenuchidae, Nolidae, Noctuidae and Micromoths
References
Waring, Paul, Martin Townsend and Richard Lewington (2003) Field Guide to the Moths of Great Britain and Ireland. British Wildlife Publishing, Hook, UK. .