The Royal Navy's older carriers in a 1942 war

What would the Royal Navy do with its older carriers if the Second World War began in 1942?

Retain or reactivate them for convoy support, aircraft ferrying, regional cover, and reinforcement while modern carriers performed the principal combat missions.

Without a major threat, Courageous, Glorious, Furious, and Eagle were approaching retirement or reserve status as newer ships arrived. A 1942 war would instead activate them for secondary but important work. Courageous and Glorious could reinforce Home Fleet operations against German raiders, Furious could ferry aircraft quickly to Malta, and Eagle could support cruiser forces in the South Atlantic. That distribution preserves the newest carriers for demanding combat while exploiting the speed and aviation capacity still available in older hulls.