Thanks @gusruss89, this is resolved!
Thanks very much for your reply @coreyk. Unfortunately granting ‘manage_options’ capabilities to editors isn’t something I can do in this instance.
I’ll need to revert to alternate caching solution for the time being. Annoying, since I’ve just started using KeyCDN.
Are there any plans to make it possible for other user roles to clear the cache in future versions? To me it seems this a tool that editors of websites/blogs ought to have access to since there does’t seem to be the option to clear the cache of a given page or post when updated.