This grower is sure of this plant identification.
fox and cubs, orange hawkweed
Pilosella aurantiaca (fox and cubs). This perennial plant was introduced to UK gardens in the 1620s and documented as a naturalised plant in the 1790s. It has rust-red to golden orange or yellow, daisy-like flowers with toothed petals. Mid-green, soft hairy lanceolate leaves form a basal rosette. The flower buds and stems are covered in thick black hairs.
Will self-seed freely and naturalise in grassy areas.
A protected species in its countries of origin, whilst a 'noxious weed' in Tasmania, various states in the USA and areas of BC in Canada. Grown for its striking flowers which show a gradation of colours as they mature.