LCH Limited Self Certification - Rule Change allowing use of alternative interest rate source for PAI or PAA calculation, invoicing back of non-performing contracts and use of market data by LCH Group companies Report date Mon, 15/05/2017 Attachments LCH Limited Self Certification - Rule Change allowing use of alternative interest rate source for PAI or PAA calculation, invoicing back of non-performing contracts and use of market data by LCH Group companies