BTW, I've found it makes access much better if you also remove the wiper motor mechanism - the least obvious, and most awkward bolt, is the one at the end of the groove in the wiper motor plate to the right of the passenger wiper-blade spindle.

You can just see this groove immediately above the red arrow in the photo below, you can get to the bolt with a 3/8 extension bar if you run the wipers momentarily to move the "link-bar" out of the way...

Well done!  That's good going for your first time.

Made the trip back to Bristol, drove around extensively for a couple of nights, and then another 92 miles back to Bagshot. No problems at all, reeeeeesult. Sorry Miss Kitty and your Go-Go-Pussy-Cat-Nympho'-Dolls, but OOF is now my favourite page!