Basically there isn't and pragmattically there can't be, because OSHA under USA law is a series of directive by the Federal Government.  Whilst EU Law is also Federal and a series of directives, all the the local 26 countries have their own laws and adapt the EU law to their own version (or ignore it - it seems).  UK law is split into Scotish Law, English and Welsh Law and Northern Irish Law.  All these laws are very similar, as you know, but with minor differences.  I think the biggest hurdle is case law, where under English law safety legistlation tends not to be appealed at all, as the court system accepts that the safety law was broken and so a penalty must be made.  Whereas is appears under USA Federal Law and OSHA, companies can and do break the US laws, get prosecuted and are then allowed to appeal the decision of the court and often reduce or walk away without paying reparations to the Country or individuals.  This is why companies operatoring tend to zero in on one type of law.  I used to work for KBR in Iraq, so I was goverened by OSHA laws, even though I am British, working in a war zone in Iraq (who have their own laws) and for an American company.  

Thanks looks like it will be a task managing it.

I'm thinking of looking at top level investigating the hazards the business has as the work is same in each operating area. Formlating a register of them using the local directives and have the local management deal with the respective law through their legal sections. Does that sound achievable to you?