Fuji Abound
I have recently done an Instuctor seminar and they covered these points.
The 1 hour Instructor flight in the last 12 months is compulsary. But it doesn't have to include certain aspects of flying. (It doesn't have to but is a good idea if it does!) It can be 1 hour of IMC training or 1 hour of Aerobatics or just a general revision trip with an Instructor(Always a good thing!), it doesn't matter as long as the Instructor is happy to sign your log book to confirm you have flow with one.
The reason for this 1 hour is there are too many Private owners out there who have never flown with an Instructor for years and obviously habits start to develop. So if the Private owner goes flying with an Instructor for that hour and he(or any other instructor) wont sign it off then he has to go for more training before his license can be revalidated.
6 hours P1, 6 of any other flying including a one hour flight with an Instructor in the last 12 month.
Big thing to remember. If you have the required hours, don't let the date pass without the Examiner signing the license for Revalidation. If you do, but have the hours you will have to do a Renewal test with an Examiner.
So if you've got it get it signed. Don't wait for the Date. You can do it before the date, and the 24 months will run from the date it runs out, not the date signed.
Hope this helps.