Gulf Marine Services : Standard form for notification of major holdings

In reference to section 9, the shares detailed are managed by the named discretionary investment management entity within multiple portfolios on behalf of underlying clients, based on investment management agreements whereby the client has delegated the exercise of the voting power to the referenced investment manager.

This disclosure is to reflect the fact that the voting rights held indirectly by the underlying investment management entity Standard Life Investments Limited ('SLIL') increased above the 5% notifiable threshold due to trading on 13 November 2018. 'SLIL' now holds the delegated voting rights to 5.21% of the shares in Gulf Marine Services PLC. Prior to this crossing, SLIL held 4.64% of the delegated voting rights.