I had a frantic and quite productive e mail exchange with the CAA and asked some very specific questions. They have confirmed that the renewal needs to be done within 7 years of the expiry of your last unrestricted green rating. The Tutor for example is worthless for exemption purposes. They have also confirmed that they recognise the mil validity of 13 months. If you have previously had a SPA MEIR, then the renewal requires a precision and a non precision approach with some other ancillaries like holds, UPs and steep turns. I did the whole thing with an NDB and VOR/DME to ILS. Not sure you need to be paying for a swept up techy ac.