Thomas Hennell is one of that generation of painters born in 1903 whose collective achievements are such an adornment of modern British art. Among his contemporaries are Edward Bawden, Richard Eurich, John Piper, Eric Ravilious and Graham Sutherland. Some of these have been over-praised (Sutherland’s reputation was unhelpfully inflated for many years, then suffered a crash), others underrated, such as Eurich.