Phylum: Rhodophyta   Family: Arcochaetiaceae

Rhodochorton purpureum  (Lightfoot) Rosenvinge, 1900

Purple Felt Weed

A mat forming species on the middle to upper shore. When in the splash-zone it is often near a seepage or on overhanging rocks

References: 
Bunker, Brodie, Maggs & Bunker (2017) - Seaweeds of Britain and Ireland