Renewing an expired NI DPO Cert

It is now December. My NI DPO Unlimited expired this May 2019.

In the past 5 years I have 30 days DP sea-time.

Is the 5 day DP Revalidation course sufficient for renewal:

If you get your application in before the end of December, yes. After that I think you need to start over at the beginning.