James Lawrence Isherwood FRSA, FIAL (1917–1989) was a dynamic figure in 20th-century British Expressionism, renowned for his highly sought-after ‘Wigan style’ cityscapes and expressive portraits. Born and bred in Wigan, Lancashire, Isherwood was prolific, capturing the passionate vitality of the working-class North with bold brushwork and explosive colour. His technique, described by critics as that of an 'atmospheric expressionist', often employed 'running paint' to unify the effect, creating a distinctive visual force. His most valuable works focus on evocative Wigan street scenes and dynamic London landscapes. Isherwood’s commercial cachet is exceptionally strong, validated by elite provenance and institutional recognition. He earned the rare endorsement of his contemporary, L.S. Lowry, who purchased his portrait, Woman with Black Cat, and displayed it at his home until his death. This prestige extends to Royal circles, with King Charles III (then Prince Charles) acquiring a painting during his studies at Cambridge University in the late 1960s. His contribution to British art is secured by works held in permanent public collections, including the Salford Museum & Art Gallery and the Warrington Museum & Art Gallery. The artist’s eccentric and colourful life was also celebrated in the BBC documentary, I am Isherwood. Isherwood’s legacy ensures his paintings continue to be fiercely collected by private individuals, including Sir Ian McKellen, solidifying his place as a commercially significant master of Modern British Art.