Looking at the centrally cleared euro-denominated derivatives market, the picture that emerges from the data reported by euro area banks under EMIR is that CCPs established in the UK clear 3/4  BIS central bankers' speeches  approximately: 95% of their interest rate derivatives transactions; 60% of their credit derivatives transactions; 30% of their commodity derivatives transactions; 25% of their equity derivatives transactions.
Overall, in terms of notional amounts, more than 90% of the euro-denominated derivatives business of euro area banks is cleared via UK CCPs. The importance of UK CCPs is not limited to derivatives, as they are involved in approximately 50% of the cleared euro-denominated repo business of euro area banks.