UK National Standard for Marine Oil Spill Response Organisations (link)
This document outlines the MCA and BEIS’ agreed minimum standard for Oil Spill Response Organisations (OSROs). The Standard can only be applied by MCA or BEIS approved accreditation bodies in their accreditation of OSROs for contracts held with UK ports, harbours, oil handling facilities and offshore installations. In their approval of OSCPs and OPEPs, the MCA and BEIS will only recognise OSROs accredited under approved schemes which apply the Standard.
Source: MCA/BEIS.