NI Deducted - Can Income Be Self Employed

[CG]

I posted this in the Income Tax forum but maybe it is more appropriate here as it is trying to establish the type of business.

I have a client who is a costume designer and she has given me payslips with employee and employer NI deducted but no PAYE.

Is this because the 7 day rule has been applied (each payslip was for only a few days) and is she therefore an employee for each job?

My client insists she is self employed and has given me alot of expenses. I don't see how I can offset these if all earnings were employed?

My main question, if anyone can help, is:

Is this income definitely employed income due to the type of NI deducted - her tax code was NT and NI category A.

I know sometimes in this industry payslips are incorrectly issued with NT coding to self employed people, but in this case the NI makes me think I cannot take it as self employed.

I hope someone is able to help.

[section 44]

Is this income definitely employed income due to the type of NI deducted

No.

[CG]

So does that mean that even though Employers NI has been deducted I am still able to submit it as self employed income and deduct the related expenses?