This species is not local to the Yeldham area. It is reported from the Langdon Hills near Basildon in Essex, and from Monks Wood and Woodwalton Marsh in Cambridgeshire.

There is usually only one brood per year, in a year with an early spring emergence there can be a second brood. The Butterfly over-winters as a chysalis in a web of silk attached to vegetation. Food plants include Creeping Cinquefoil, Dog Roses and Brambles.

2 June 2011. Woodwalton Marsh. 2 Grizzled Skippers.
3 June 2011. Woodwalton Marsh. 4 Grizzled Skippers.
9 June 2013. Bison Hill, Whipsnade. 1 Grizzled Skipper.
16 May 2014. Bison Hill, Whipsnade. 2 Grizzled Skippers.