Total Voting Rights and Warrant Update

PREMIER OIL PLC(the "Company")

Total Voting Rights and Warrant Update

As at 31 July 2018, Premier Oil plc's issued share capital consisted of 776,827,657 Ordinary Shares of 12.5 pence with voting rights. Premier Oil plc does not hold any shares in Treasury.

The figure of 776,827,657 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 20,237,616 Ordinary Shares as a result of the exercise of equity warrants, representing 2.61 per cent of the Company's enlarged share capital.

As at 31 July 2018, 13,818,533 warrants have been exercised on a cashless basis and a further 16,177,066 warrants have been exercised in cash.

For further information please contact:

Daniel Rose

Premier Oil plc

020 7730 1111

1 August 2018