How do I get out of doing future tax returns

Keep_pedalling

For a good few years we have had to do tax returns to cover dividends, foreign earning and CG returns from what we’re substantial general investment accounts, but I am hoping the return from the last FY will be the last. We have now run down those accounts to zero through spending some of it and annual maximum transfers into our now substantial ISAs. 

The only liquid assets outside the ISAs is held in a small cash emergency fund and a chunk of premium bonds. Income comes from state and BB pensions, so after completing the latest returns there should be no need to ever do another one, so my question is how do we get HMRC to stop asking us to carry out SA?

MattMattMattUK

You tell them.
https://community.hmrc.gov.uk/knowledgebase/article/KA-01125/en-us

Keep_pedalling

Thanks Matt, all a Google search threw up was how to unregistered self employment.