The Banks and Barry Partnership was established in 1847 when Charles junior left his father's practice with Banks, then senior assistant in the practice. For a time (1855–64), the partnership was based at 27 Sackville Street, London. The pair managed numerous projects in London and East Anglia. The partnership was dissolved upon Banks's death in 1872. Sir Aston Webb was a pupil in the practice from 1866 to 1871.