In 1948, Le Jeune exhibited at the Royal Institute of Oil Painters and the same year he exhibited Fishermans Regatta at the Society of Marine Artists.
Royal Navy | Royal Air Force | Massachusetts Institute of Technology | Royal Dutch Shell | Royal Society | Royal Albert Hall | Royal Shakespeare Company | Royal Opera House | Royal Victorian Order | California Institute of Technology | Royal Engineers | Royal Australian Navy | Art Institute of Chicago | Royal National Theatre | Royal Canadian Navy | Royal Canadian Air Force | Institute for Advanced Study | Royal Court Theatre | Royal Marines | American Institute of Architects | oil | Royal Commission | Georgia Institute of Technology | Royal Academy of Music | Anne, Princess Royal | Royal Philharmonic Orchestra | Theatre Royal, Drury Lane | Royal Flying Corps | Royal Canadian Mounted Police | Royal Australian Air Force |
He exhibited at the Royal Academy, Royal Society of British Artists, Royal Institute of Oil Painters, Royal Institute of Painters in Water Colours, Grosvenor Gallery, Agnew and Sons Gallery and Dowdeswell Gallery in London, as well as at the Royal Hibernian Academy, Glasgow Institute of the Fine Arts, Royal Society of Artists in Birmingham, Walker Art Gallery in Liverpool and Manchester City Art Gallery, and joined the New English Art Club in 1886.