Appointment of WH Ireland as joint broker

19 March 2014

Appointment of WH Ireland as joint broker

The Directors of Sirius Minerals Plc (AIM: SXX, OTCQX: SRUXY) ("Sirius" or the "Company") are pleased to announce the appointment of WH Ireland as joint broker.

WH Ireland will join Liberum and Macquarie as a joint broker to the Company and will have the specific task of engaging with the Private Client Broker ("PCB") community throughout the UK. It will also provide equity research and market making in Sirius' shares.

WH Ireland is a top tier broker by reference to number of AIM clients. It has shown strong growth in recent years in part by developing a broking offering which combines both a retail and institutional focus. WH Ireland has 13 offices throughout the UK, leveraging these local relationships to provide effective PCB broking to augment institutional coverage.

Chris Fraser, Managing Director and CEO of Sirius, commented:

"We have been impressed with the reach that WH Ireland has, particularly in regional roadshows that they have helped us with, and the contribution they made in the recent equity placement.

"We look forward to adding a significant new market maker in the stock and equity research that will be available to a wider audience."

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About Sirius Minerals Plc

Sirius Minerals is a globally diversified potash development company. Its primary focus is to bring on stream major potash mining facilities through the acquisition and development of projects overlying recognised potash deposits. Today it holds properties in the United Kingdom (North Yorkshire) and the United States (North Dakota). Incorporated in 2003, Sirius Minerals' shares are traded on the London Stock Exchange's AIM market. Its shares are also traded in the United States on the OTCQX through a sponsored ADR facility. Further information on the Company can be found at www.siriusminerals.com.