After the Second World War, story papers gave way to comics, and Hubbard drew adventure strips for AP's Knockout, starting with Treasure Island, based on the 1934 film version, in 1945, and followed by an adaptation of R. M. Ballantyne's The Coral Island in 1946. The same year he became assistant to Norman Pett on the Daily Mirror's daily cheesecake strip Jane, drawing backgrounds and supporting characters. He took over from Pett as the strip's artist in 1948, and drew it until it finished in 1959.