SMSTS Checker

The certificate for the SMSTS course will last for 5 years after passing. This is in order to keep your health and safety knowledge up-to-date as policies and regulations change throughout the years. It means there is no excuse for poor health and safety procedures, since you must complete the refresher every 5 years. If you have taken the SSSTS course previously, you could use this time to upgrade to an SMSTS certificate if you’re hoping to progress as a site manager.

https://www.theccm.co.uk/smsts/#faq