Would Britain rush light carriers into production?

Would German and Japanese carrier strength make Britain rush a light-carrier design into service?

Not immediately; Britain already has a large carrier force and is more likely to enlarge the Implacable and Unicorn follow-on orders.

Britain has no immediate carrier deficit. Before wartime losses, the Royal Navy has Courageous, Glorious, Ark Royal, Furious, Hermes, Argus, and Eagle, with four Illustrious-class ships building. One or two German carriers therefore do not require a prewar crash program of converted or light carriers. A more likely response is to double the Implacable-class order and perhaps build Unicorn's proposed sister, using designs already inside the procurement system. Courageous and Glorious were historically lost after their commanders departed from established carrier-operating models. A visible German carrier threat could encourage more cautious employment and preserve more of Britain's existing force.