看這，不過我理解有誤，Incestment ISA 可能包括casn ISA, 而不隻是stocks ISA。

‘Our Investment ISA lets you protect anything from 163;250 up to 163;7,200 each year from tax on interest, dividends and capital growth’
http://www.stockbrokers.barclays.co.uk/?category=whatweoffer&usecase=landing160&WT.srch=1&mpch=sem