Total Voting Rights and Warrant Update

PREMIER OIL PLC(the "Company")

Total Voting Rights and Warrant Update

As at 31 May 2018, Premier Oil plc's issued share capital consisted of 768,996,691 Ordinary Shares of 12.5 pence with voting rights. Premier Oil plc does not hold any shares in Treasury.

The figure of 768,996,691 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, Premier Oil plc under the FCA's Disclosure and Transparency Rules.

To date, the Company has allotted 13,242,511 Ordinary Shares as a result of the exercise of equity warrants, representing 1.72 per cent of the Company's enlarged share capital.

As at 31 May 2018, 13,770,102 warrants have been exercised on a cashless basis and a further 9,212,782 warrants have been exercised in cash.

For further information please contact:

Daniel Rose

Premier Oil plc

020 7730 1111

1 June 2018