I think the HMRC rule is that warrants cannot be held in an ISA for more than 30 days after their issue. Seems to me that Barclays were negligent here. BUT - what's now in your ISA are shares ( not warrants ) & so that's OK.
Hi Gordon57 - Barclays have told me there are monthly opportunities for exercising warrants. Additionally, you can phone them any time ( up to expiry date ) to exercise.
Exercising online can be dangerous if you can't hear the train coming ! Greetings Boboil. Seems as if everyone has got their sense of humour back after OM.