Scrambling along the south eastern gill in Yellowcoat Wood, near Flimwell, East Sussex (grid ref TQ 713303) this afternoon, I found some small, rusty brown objects erupting the the bark on the trunk of an old holly (Ilex aquifolium).
They were easily identifiable as Nectria punicea var. ilicis, a species for which I can find no other East Sussex records, though I suspect it is not uncommon.
Yellowcoat wood is, by the way, the reputed site of a medieval massacre. In 1264 King Henry III on his way to the Battle of Lewes is said to have had 300 local archers beheaded there (it was then a field) in response to one of his retinue having been killed.