National Insurance Number on CoS

[Physicist]

I was recently issued with a CoS and it has my national insurance number it. I think adding a national insurance number is not mandatory to assign

But since the CoS has a national insurance number, I'm just worried that it is registered to my previous address and wanted to ask if this wouldn't be a problem when a caseworker sees my application?

I got that NI number a year or so ago as a Tier 4 student because I wanted to find employment at the time but never actually got into employment.

Any assistance would be much appreciated.

[geriatrix]

NI number has nothing to do with an "address" but is registered to an "individual".

[iworker]

one person cant/shouldnt have more that 1 NI number.
However, since u have moved houses, you should call hmrc and update your address. NI number is issued by hmrc as well. this will help you get any tax refunds , if any, as well.

[geriatrix]

NI number is issued by DWP, not HMRC!!
HMRC issues a unique tax reference (UTR) to an individual.