The Brew Cabin

We are thinking of putting in a concrete base for an above ground swimming pool to sit on (approximately 5x3 meters) which when full should weigh around 11 tonnes so just looking for advice on the thickness of the sub-base and slab required. My plan was for 100mm of compacted MOT then 100mm of C35 concrete but haven't really been able to find any clear guidance so thats just my assumption, any advice is appreciated as I'd rather do it properly and cost it out rather than find out later that I've under-engineered it!