Total Voting Rights

For immediate release: 29 October 2010

SIRIUS MINERALS Plc

Total Voting Rights

For the purposes of the Disclosure and Transparency Rules of the Financial Services Authority, the Board of Sirius Minerals Plc (the "Company") is required to notify the market of the following:

As at the date of this announcement, the Company's issued share capital consists of 715,606,602 ordinary shares with a nominal value of 0.25 p each, with voting rights ("Ordinary Shares"). The Company does not hold any Ordinary Shares in Treasury.

Therefore the total number of Ordinary Shares in the Company with voting rights is 715,606,602.

The above figure of 715,606,602 Ordinary Shares may be used by shareholders in the Company as the denominator for the calculation by which they will determine if they are required to notify their interest in, or a change to their interest in, the share capital of the Company under the Financial Service Authority's Disclosure and Transparency Rules.

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For further information, please contact:

Sirius Minerals Plc

Richard Poulden (Deputy Chairman) Mobile: +971 504 524 994

[email protected]

Jonathan Harrison (Financial Director) Mobile: + 44 78 7988 7755

[email protected]

Beaumont Cornish Limited (Nomad)

Roland Cornish Tel: +44 (0)20 7628 3396

XCAP Securities Plc (Joint Broker)

John Grant, Karen Kelly, David Newton Tel: +44 (0) 20 7101 7070

Daniel Stewart & Company Plc (Joint Broker)

Christopher Theis / Emma Earl Tel: + 44 (0) 20 7776 6550

GTH Media Relations

Toby Hall Tel: +44 (0)20 3103 3903