Right, there's definitely no little cut out on the aerial or its surrounds for a key. I've got a fuse for an electric antenna (not blown) so I'm thinking this must be an electric one. It doesn't go up when the radio's on, nor can I hear any motor working. I presume it's buggered but thought it was worth checking first to see if any other owners have the same one.
If it's electric, how do I get the bulk of it out from the inner wing? Is the void accessible with the plastic wheel arch liner off?
Just for reference - here's what mine looks like close up:
It has a big plastic top which pulls out (not sure if it's supposed to or if I've broken it):
Revealing not much inside:
