Anna Friel. I witnessed her being very rude and shouty to a staff member in Kendall's in Manchester. I gave her the benefit of the doubt for a while as I wasn't party to the start of the conversation, but I've heard a few similar stories from friends who have first hand experience of her being rude so it wasn't an isolated incident.
I've heard nothing but condemnation for her behaviour. There was one story in particular in the Blind Items thread that summed up a lot of the negative things send about her- about as far removed from down-to-earth as you can get!