Thanks dx, just starting to face into the wind!

Hi all I've had an interesting year, my business finally failed owing me £50k or so and just commencing divorce proceedings with the missus. I like a challenge! I have a new job and I'm starting to look at rebuilding my life, but the credit card sharks won't leave me alone! My credit cards are all pre 2007 so I want to challenge them, but my question is this. Can I still challenge the legality of a credit card agreement even if in an IVA? Thinking of going the IVA route just to get them off my back!!! Many thanks in advance. Trying to keep my eyes on the light at the end of the tunnel, but people keep trying to turn it off!