I’ve been looking around for the best cash ISA savings rate for a product that doesn’t have any strings attached, such as requiring you to invest the same amount of money again in a fixed term bond. The top rate that I’ve been able to find to date is a fixed rate cash issue (issue 27) from the Principaility Building Society. It pays an AER of 6.60% on maturity. If you’ve come across a cash ISA rate to beat the deal from the Principality then please let us know by posting your comments here.