Just had someone from Trusted Advisory Group on my mobile. I explained that I was with another company looking into the mis-sold PPI on all my cards.
He said that was fine and that I could claim with a second company if I wanted to.
Dunno if that's legal or not, but if I can sign and date the forms and bung them in the post by Monday morning, he'll fast-track my claim so that I hear back within 8-12 weeks which ain't bad!
I've got nothing to loose but a few minutes of my time and could, potentially, get thousands back!