Rosie, I'm sure they can only process/interview you at a Jobcentre plus, maybe it depends on how close you are to one, if they will ask you to attend an interview or use the post. mind you thou my wife got her nino 6yrs + ago and also I'm sure terpe's wife got her nino a while ago ?, so it could also be they are not carrying many interviews out anymore, as with visa's, not many are asked to attend interviews at embassies anymore (my wife was, and then my stepson was asked to attend 18 months after his mom got her visa, again many yrs ago thou)