franklyn
Unless you can show that the significant flaws with the current Decision, yo may need to think about taking it to appeal as revision rates at MR are very low. An appeal resets everything and the panel should treat all of the evidence in a much more balanced way, so a letter from your GP may be enough with what you have already submitted.
But remember, you'll only receive a Mobility award by showing that you meet the criteria for one, so you need to go through your PIP2, your evidence and the PIP Claim guide to make sure that you have shown this to be the case.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
