Thanks for posting, it looks like this was your first post, it's always nice to see new members posting
I'm not sure if anyone wil have hd interviews specifically in Hertfordshire, if they have they may well respond further. To start with here is a link to an excellent WIKI written by one of our members about preparing for IAPT PWP interviews: viewtopic.php?f=30&t=12752
I hope this helps and good luck
I think a hero is any person really intent on making this a better place for all people ~ Maya Angelou.