This question comes up every year.
“I am a director of lots of companies but only get paid by one company, do I need to list them all?”
Some people make up dummy Payroll Numbers and list directorships, some people list them in the notes, some don’t list them at all, what is the right thing to do?
The answer has to be to follow the HMRC Guidance
As you can see its says
‘received income as a company director’
‘held an office, such as chairperson, secretary or treasurer and received income for that work‘
If you didn’t receive income you don’t need to report it as it will not affect your tax.