Bingofuel,
Thanks for the info. However as you can see from previous comments, you can see where my confusion comes from.
Some say I need to have a valid MEP within the last 3 years or else I need to complete the entire MEP course. Others say it depends on the authority of my licence. I cannot seem to find any reference to this on the CAA website.
My MEP expired 4 years ago so that puts me beyond the 3 years as mentioned. My MEIR however expired 3 years ago so I'm OK for another few years before exams have to be repeated.