Sorry, Pete, didn't mean to hijack your thread.
I couldn't believe what I'd done when I realised. At least I didn't start the engine, so no actual damage done. Plus, after ringing the AA and getting quoted 266, I rang the RAC and got quoted 210, so I saved £56 just for a phone call. It could have been a lot worse. It's just that it's come at the end of a week of other unexpected and unwanted expenditures, which have done nothing but put me back where I was before.
Ark, what your Gizmo called? That seems like a good little safety gadget.