So after a monster hunt, I've gone and bought the Taco. I finally managed to track one down at Freedom Mobiles and ordered it over the 'net.
So I've got the beast, I've started getting it loaded with all the goodies I need: WirelessIRC, FExplorer, e-books etc. (I've got a "what's on my taco" article in the works), and lo and behold 50 quid gets lopped from the price :-(
A Series 60 Symbian phone for less than £100? Blimey!