Lindy
I have moved your post to its own topic, we ask members not to post their questions in others topics as it can lead to the wrong advice being given or taken.
I would not rely on the DWP or the assessor sourcing any evidence from your GP or other medical contacts, there is no legal requirement for them to do this and in the vast majority of claims they don't.
It's important to understand that the criteria for PIP is very different from DLA so you really need to think about how you might support your claim so please make sure that you have a good read of our PIP Claim guide.
www.benefitsandwork.co.uk/help-for-claimants/pip Gordon