@Joanne1953 , all you have to do is recognize the dividend income and pay US taxes on this income stream.
If UK taxes you on this , then that ( doubly taxed foreign income ) may be eligible for Foreign Tax Credit or deduction ( if you itemize ).
I am assuming here that you are a UXS person ( citizen/GreenCard/ Resident for Tax purposes ).
Noting that you have at least one foreign bank account , you are subject to FBAR and FATCA regulations.
Is there more one can do for you ?
