If I'm a Company Director, can the actions of the company affect my personal Equifax Credit Score?

Yes, in certain circumstances. For instance, if you have gone guarantor for a company loan that is then not repaid on time, or at all, your personal Equifax Credit Score will be negatively impacted. (If a credit provider wishes to access both your consumer credit and commercial Credit Files – aka your Credit Report – as part of assessing an application for credit, they will need your consent prior.)