The engineering / management responsibilities within a micro / SME company can be demanding and in many cases the work is completed on behalf of other companies.

The work can be documented and CPD documentation completed.

However regarding professional Engineering status:

Do Micro Companies need Approved Employer Status?

Does the preferred requirement for an IET registered supporter(not Mandatory) of your Expertise and Experience for C.Eng status become a difficult hurdle?

In consideration of the above, does the route to professional status become even longer and more protracted in a micro company?

The engineering / management responsibilities within a micro / SME company can be demanding and in many cases the work is completed on behalf of other companies.

The work can be documented and CPD documentation completed.

However regarding professional Engineering status:

Do Micro Companies need Approved Employer Status?

Does the preferred requirement for an IET registered supporter(not Mandatory) of your Expertise and Experience for C.Eng status become a difficult hurdle?

In consideration of the above, does the route to professional status become even longer and more protracted in a micro company?

If you mean "accreditation" for the employer, then you don't need it.  Individuals can apply for CEng/IEng/EngTech by themselves.  It only matters if you have some kind of accredited training plan for your employees.

Anybody applying needs someone to sign their application.  It doesn't have to be an employee of the same organisation.  That makes it easier, but I would hope that a small company/freelancer would have enough contacts to find somebody.