No, not 6 months. The medical is valid for 1 year from the time it was completed. At the time your husband is contacted for an interview, he will be asked to bring a new police clearance with him. They are easy to get and relatively inexpensive (30 dirhams in Marrakech).
Thanks for the note paixpeace. We are staying positive and ACTIVE in this. My husband is re-doing his medical next week, getting a new police clearance and I have emailed my MP's office again today as it looks like the Embassy lied to my MP. They said my husband's interview will take place in September but this does not seem possible now as there has been no call yet and the embassy will be closed next Monday and Tuesday for Eid. The embassy is required to give adequate notice of an interview which "should" be at least 2 weeks (although I know they give less sometimes). Well 2 weeks from today is the last day of September and also a Wednesday. The embassy does not conduct this type of interview on Wednesday's as these are "visa" days (visas issued are distributed on Wednesdays). Hopefully my MP will be able to get some information from them as they haven't responded to my last email which I sent last week.
BUT, it will be over soon. We will stay positive but I will NOT let them treat us unfairly.