ISO45001:2018 vs HSG65

Answer:
While I am not an expert on HSG65, both ISO 45001:2018 and HSG65 both seem to be Occupational Health & Safety Management System (OHSMS) requirements that can be implemented in a company. Both requirements follow the Plan-Do-Check-Act methodology, and include auditing to maintain the standard. One difference seems to be that ISO 45001 focuses on worker consultation and participation in the OHSMS, where I do not see this in HSG65. There may be some differences within the standards, but the biggest difference I can see is that ISO 45001 is an internationally recognized standard, where as HSG65 is only recognized in the UK. If you are looking at an international market for your customers, this could be a determining factor.
One thing to remember is that ISO 45001:2018 also does not require certification if the const of cer tification is the driving factor to not implement this standard. The standard does give you the option to implement all aspects of the standard and then be able to claim compliance to ISO 45001:2018 (as opposed to “certification to ISO 45001:2018”). So, if the only drawback to ISO 45001 is the certification, you could compare the 2 standards to see which would be a better fit for your organization. Both will have implementation costs, and both will give you a working OHSMS, but which one will benefit you in the long term. With ISO 45001, even if you do not certify right away, you also have the choice of certifying in the future if this becomes something that will be useful to you. You will not have this choice with HSG65.
For more information on the benefits of ISO 45001:2018, see the article: 4 key benefits of ISO 45001 for your business, https://advisera.com/45001academy/blog/2015/09/30/4-key-benefits-of-iso-45001-for-your-business/