Official guidance states see page 58
https://assets.publishing.service.gov.u ... gov-uk.pdf
"A limited company is owned by its shareholders. Where such a shareholder is also a
director or other employee of the company, they may be paid a salary and receive
dividends, which can generally be counted, as appropriate, as employment or
nonemployment income under Category A, Category B or Category C. However, if
the company is of the type specified in paragraph 9(a) of Appendix FM-SE, the
person’s income must instead be considered under Category F or Category G. This
is because in a company in sole or limited family ownership there is scope for doubt
as to the effective control of the company, as the person is either a director or
employee (or both) and a shareholder or the other shareholders are family members
of that person. In that case, instead of the employment evidence in Category A or
Category B or the dividend evidence in Category C, we need the evidence about the
operation of the company required under Category F or Category G. "
You need to apply either as CAT F or CAT G as per the guidance instead of CAT A & CAT C.
My opinions should not be constituted as an immigration or legal advice.