 Roberts was intrigued by Post-Impressionism and Cubism, an interest fuelled by his friendships at the Slade (in particular with Bomberg) as well as by his travels in France and Italy after leaving the Slade in 1913.Later in 1913 he joined Roger Fry's Omega Workshops for three mornings a week.The ten shillings a time that Omega paid enabled him to create challenging Cubist-style paintings such as "The Return of Ulysses" (now owned by the Castle Museum and Art Gallery in Nottingham).