Carer's National Insurance Credits

I have been caring for a disabled person for some years now, and about 2 years ago I successfully claimed National Insurance Carer’s Credits. Does anyone know, do I have to re-apply for these on a regular basis, or will they continue automatically until such time as I am no longer entitled to them? (I am not currently employed in any capacity, nor am I in receipt of any other form of benefit) Hope someone can advise me on this.

Are you sure you don’t qualify for full Carers Allowance as you are not working?

From web site

Carer’s Credit
Carer’s Credit is a National Insurance credit towards your State Pension while you’re not making any contributions because of your caring role.

You might be able to get Carer’s Credit if:

you are aged 16 or over
you aren’t yet getting State Pension
you don’t qualify for Carer’s Allowance
you spend at least 20 hours a week caring for someone
the person you are looking after receives a benefit because of their illness or disability, for example, Attendance Allowance, Disability Living Allowance or Personal Independence Payment. If the person you’re caring for doesn’t get one of these benefits then you might still be able to claim by completing a ‘Care Certificate’.

Please read the above