Catherine Huntley (12688)
Julia Roberts (11129)
Clare Sutton (11073)
Debbie Shore (10990)
Debbie Greenwood (9593)
This should be the Shopping Presenter top 5 - obviously better exposure on these channels than Gala/Roulette etc.

Not a lot in it between 2nd/3rd/4th...
Must admit that the only one I personally follow is Catherine - couldn't comment on how much time on TV any of these ladies get as compared to anyone else.