Thanks for your question - I am Sam and I am one of the UK tax expert
If they were your sons accounts (in their names) and they created an income of interest of more than £300 a year - then although there may have not been any UK tax liability (due to their entitlement to Uk tax personal allowances) they should have made a claim to HMRC of any income that arose from this capital sum.
You advise that the accounts have grown threough the play of stocvk markets, did they play them themselves or did someone do this on their behalf? It is so I can establish whether there was a tax consideration of profits made.
Since they have worked - then they had an obligation to declare all or any income that this capital sum made and ought to seek to recify this position as soon as possible, so perhaps they can establish what awards of any interest have been made
or other means of growth on this initial capital sum.
This having been addressed, then they are free to bring as little or as much of this capital into the UK without any further tax consequence.
Let me know if I can be of any further assistance
thanks your message.
their grand father French resident was playing stock market himself /not the children. they gave their grand father access to the account order sell/buy stocks. regards
Thanks for your response
Its irrelevant who played the stock market it was the childrens money and they (the children) benefited from the profits made and so capital fains would need to be considered on gains made (and any interest paid on the capital within the account)