Well. I've done it! I resigned today!
I wasn't sure quite how to go about it really, so I shoved an envelope on Jon's desk which he read when he was ready. I came to the conclusion it might've been more amusing just to put a sheet of A4 inside with "April Fool!" on it in 64 point Arial Black or something, but I doubt it would've made me popular.
Did bits and pieces in the afternoon. All quite eventless, really.
There seems to be a plan to let me bugger off to the South of France and take a computer with me to be paid to do stuff from there. I don't think I could complain about that, but it has to go to pointy-haired management so we'll see.
Hm.