Could a large 1930s British carrier have operated twin-engine aircraft?
Short answerYes, especially with sufficiently large deck-edge lifts; that could have enabled faster, longer-ranged strike aircraft and changed carrier aviation development.
NotesThe practical limit on carrier aircraft was often the lift and hangar system rather than the flight deck alone. A larger British carrier with deck-edge lifts could have operated twin-engine aircraft, increasing speed and strike range and perhaps influencing other navies' design choices. One shipboard interface can shape an entire air group's development.