Hi AVMSurvivor
You can ring the DWP dealing with your claim and put in a request for a copy of the assessment report to be sent to you. (10 - 14 days)
If the report is inaccuate you can contact the decision maker, saying where you disagree with it, but you will have a very small window of time to do this. (can't tell you how long)
When you get the decision, if you disagree with it, you are then free to put in for an MR.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems