Competent oil painter of landscape ballooning subject and 'ornamental and scenic’ painter in non-theatrical public entertainments, primarily at Vauxhall Gardens. From the early 1820s until the closure of the gardens due to bankruptcy in 1840, Cocks was the resident painter creating innovative large-scale paintings and dioramas. Ascended in Charles Green's Vauxhall balloon on 21 September 1836.
