Were CAM Hurricanes already worn out?

Were Hurricanes selected for CAM ships generally aircraft that would otherwise have been cannibalised for parts?

That was broadly the intention, although some still had useful service left and conversion could involve considerable airframe work.

Hurricanes destined for merchant-ship catapults were generally expected to be near the end of their useful service. Some aircraft sent for conversion could nevertheless have remained useful elsewhere. Conversions continued as more aircraft became available, and many received substantial work on their airframes.