Re ISA query13 Apr 2018 08:11
Hi DerbyCounter, if your Coro shares have been added to your existing ISA which held the Sound Energy shares they are not counted towards your 2018-2019 ISA amount, they are a free dividend, (you did not pay for them) so you can top up your ISA with the full �20,000 this year, Had you held them outside of an ISA wrapper when you came to sell them as you paid nothing for them the whole amount would become taxable as you cannot deduct any purchase cost.
Hope I have understood your question correctly,