Trading platform XTB has launched a cash Isa paying up to 6 per cent interest. There's a sting in the tail, however - we ...

I've been very happy with the service, but the percentage-based fees are becoming harder to justify. My Isa was built up over the past 15 years through regular saving.

Trading 212* has consistently offered a top rate on its cash Isa, and we like that the underlying rate is relatively high too ...