Hi Steven,
There are several fan-made Ziggy galleries out there, as can be seen by image searching "Ziggy Stardust" in google, but I can't remember have seen any official gallery dedicated to the character. Images specifically from the UK tour I din't know about - I guess you'd have to dig through images and compare them to known facts about the tour to decide which ones is from the 72-73 UK tour. My guess is that any pic where Bowie has eyebrows are out as I seem to remember he shaved those in Miami around the time he played there (November 17th 1972 according to Wikipedia). They returned to England shortly thereafter.
I hope that helps.