I would say:
console (hard- and software)
UK > France > Germany or France > UK > Germany
PC
Germany > maybe both together 
Overall
Germany > UK > France
UK's market profits a lot form Europeans ordering in UK b/c of cheaper prices (or if a game isn't available in another country) and I don't really know how big UK's market would be without this fact. That means UK's market may be big but it doesn't really tell us how much people in UK spend on games and hardware nor how much more people in other countries spend since their money is on the UK market.







