I know that the IOM can throw up differences in procedure but we just simply registered with our GP without quibble, no passport or marriage cert was needed to be submitted or the like. My wife had to fill out a form and have a preliminary health check (simple one). The medical card arrived within a week or two. As Confused Me says, we now have that card as proof of address for our ILR application.
We did have a problem with the bank account, but eventually got round that by submitting a copy of our lease agreement with the wifes name on along with her passport and the marriage certificate -took a while but we managed it.
