ISO 45001 is generally regarded as the accepted Health and Safety standard. It replaced BS OHSAS 18001 which is no longer valid.
Certification to ISO 45001 is an internationally recognised standard and is a demonstration to your customers and employees that you take Health and Safety matters seriously. It forces you as a business to formally address the key Health and Safety issues within your organisation.
ISO 45001 is written in the same format as other ISO standards such as ISO 9001 and ISO 14001, and is therefore fairly easy to integrate into a combined management system if required.