Hunni, don’t pay anyone to help you, there’s no need. To start with, the tribunal board are independent from DWP so are much more willing to listen to you. Second, as this story says http://www.bbc.co.uk/news/uk-42862904, the DWP are having to review over a million pip cases on mental health where they didn’t previously consider mobility issues for people with MH problems. You may find yours is one of those cases. Regardless, the tribunal will have to consider this court ruling when they do their assessment. Talk to Citizens Advice and ask them what they are recommending in light of this ruling.