Acceptable Proof of Residence for Citizenship Application NA

[Mnc]

Hi,

I have made an appointment with NCS for 14 Nov 2013.

I just wanted to know if passports alone are sufficient proof of residence.

The NCS appointment form had mentioned that alternative proof of residence will be required if passports are missing.

Does that mean I will not need to provide any other proof of residence?

During the last 5 years, I had been self-employed and started two companies for which I have certification of incorporation etc. Some advise will be helpful.

Thanks

P.s. I had retained my rights of residence after divorcing my EEA spouse, was granted residence card last year via EEA4.