Selling shares sold abroad

I inherited some shares that are quoted on the Nasdaq. I’m planning on selling them and will be liable to US and UK tax. I understand that I am only required to pay tax once. 1. Can I choose where I pay tax or will it be US as that is where the shares are held? 2. How do report the tax that has been paid? Is it just a sum entered on self-assessment or do I need to give an official reference?

Hi ,
 

You will pay tax in the country you are tax resdient. As UK resident, you can then claim foreign tax credit relief for the tax paid in the US . Thank you .