No, if the self-test system can perform the monthly and annual tests then a key-switch is not required. Self test systems should be in accordance with BS EN 62034.

Clients might still request one to facilitate a manual test for spot checking the auto system or because "that's what we always have" (not a great reason but hey, if they want it and will pay for it, it's their choice).

Is the 3 hour duration test only required once a year? Or is it required more frequently? Am trying to assist a charity run building but am not a E/light specialist. I gather the quick on/off check is required monthly but don't know about the 3 hr one. On the fittings I have replaced, I always disable the self-test jumper setting because they are used to using the key switch test points already provided, and asking them to check for red/yellow/orange indicator lights would only complicate the issue.,

Is the 3 hour duration test only required once a year? Or is it required more frequently? Am trying to assist a charity run building but am not a E/light specialist. I gather the quick on/off check is required monthly but don't know about the 3 hr one. On the fittings I have replaced, I always disable the self-test jumper setting because they are used to using the key switch test points already provided, and asking them to check for red/yellow/orange indicator lights would only complicate the issue.,

Annual testing for full duration. However self-test systems will usually stagger their testing so that the whole installation isn't under test at the same time.