whether you're working in a high-risk industry or just want to feel confident in case of an emergency, this course is perfect for you. This qualification is valid for 3 years although HSE guidelines state that employers should ensure their first aiders remain competent to perform their role. As such, it is strongly recommended that first aiders undertake annual refresher training to practise their skills and update their knowledge on the latest first aid procedures. To qualify for a 2 day refresher course candidates must have an in date Level 3 First Aid At Work qualification.