Contact page for ITV:

http://www.itv.com/page.asp?partid=5

The franchise responsible is London Weekend Television
The programme is called "Trinny ans Susannah undress"

Incidentally, I have just found the original web-advert for participants in the show:

http://www.itv.com/page.asp?partid=6605

Better take a copy of that before they take it down!