Unfortunately someone's beaten me to it for the 2nd hand throttle body. I just received an email from EurospareS informing me that when they went to take the parts off the car they discovered that they'd already gone!
So it's over to David Askew to provide the parts. Unfortunately, they're considerably more expensive here, but they are definitely in stock and still much cheaper than getting new parts. I've also dealt with David in the past (I got my 3200 GT turbos from him) and he's reliable and very helpful!
Despite the set-back, I should still hopefully receive them before next weekend!