Respect to anyone who has done this job in their drive, I'm going to have to get my garage to do it but at-least I'll be able to show them where the switch is.
My arms and fingers just aren't long enough, I can't even get to undo that bracket in front of the switch.
Good news is, I won't have the air-filter housing bouncing around in future so thats another rattle sorted-out. I just don't understand why anyone would want to remove that air-filter housing unless they were trying to do what I have been trying to do and the mangled rubbers suggest these have been damaged some time ago.
And finally, this forum has been a fantastic resource for information on this project.