Woodlock moved to Liverpool when he was 12 and was apprenticed to an outfitters. He studied under artist John Finnie (1829 - 1907) at the Liverpool School of Art and became a professional artist in 1880. He exhibited at the Liverpool Autumn Exhibitions from 1871, the Royal Academy from 1888, and the Royal Institute of Painters in Watercolour, to name a few. Woodlock was a member of the Liverpool Academy of Arts and a founder member of the Liverpool Sketching Club in 1872 and president in 1897. Woodlock painted in watercolour, and his main subjects were country cottages and gardens. He studied at Ruskin Museum, Sheffield in 1889; visited Venice and North Africa in 1894 and later Holland.