Most start-ups need some certification to give them the credentials to compete with established companies - so this is a warning against some of the Cowboys out there that can rip-off the uninitiated.
In general, health and safety laws apply to all businesses. As an employer, or a self-employed person, you are responsible for health and safety in your business. Health and safety laws are there to protect you, your employees and the public from workplace dangers. For many businesses, all that's required is a basic series of practical tasks that protect people from harm.
If the thought of sorting health and safety out for your business is giving you a headache, you are not alone.