What ever mileage your Zeds are on its also dependant of what age they are don't forget. Things like plugs, belts , coolant gear box oil and diff oil quite often get over looked even from the main dealers as I found. Personally if it was me and my new car I start from scratch and get the full P3 done and at least you'd know it was all sorted. Cougar store may be dearer for a P3 but includes a lot more than your average P3 from the stealers like gear and diff oil for starters. PM Mitz for a quote and what's included.
It's easy to get to off the M1 no need to go through Leicester.