Hi Sugarfoot
I'm sorry, but we honestly don't know. In the current climate, I expect eight to twelve weeks - but I know people who have waited longer, and some have had their replies quicker. I know it can be terrifying to ring to try and find out the status of your MR, but the only way you will know is to contact the DWP for an update.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems