Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: ii

PREMIER OIL PLC

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

X

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

X

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

X

An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to the notification obligation: iii

Bank of America Corporation

4. Full name of shareholder(s)

(if different from 3.):iv

Bank of America National AssociationMerrill Lynch International

5. Date of the transaction and date on

which the threshold is crossed or reached: v

18th May 2017

6. Date on which issuer notified:

22nd May 2017

7. Threshold(s) that is/are crossed or reached: vi, vii

Below 5% in section 8C.Still above 7% in total.

  8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of

shares

if possible using the ISIN CODE

Situation previous

to the triggering transaction

Resulting situation after the triggering transaction

Number

of

Shares

Number

of Voting Rights

Number

of shares

Number of voting

rights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00B43G0577

10,241,921

10,241,921

0

0

11,921,284

0

2.334%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial

instrument

Expiration

date xiii

Exercise/

Conversion Period xiv

Number of voting

rights that may be acquired if the instrument is exercised/ converted.

% of voting

rights

Right to Recall Securities

N/A

N/A

1,250,000

0.245%

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

xv, xvi

Resulting situation after the triggering transaction

Type of financial

instrument

Exercise

price

Expiration

date xvii

Exercise

/ Convers ion period

xviii

Number of

voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Swaps

N/A

30/05/2017

N/A

732,281

0.143%

0.143%

Swaps

N/A

07/08/2017

N/A

12,000,000

2.349%

2.349%

Swaps

N/A

15/09/2017

N/A

2,872

0.001%

0.001%

Swaps

N/A

31/10/2017

N/A

30,455

0.006%

0.006%

Swaps

N/A

06/12/2017

N/A

764,211

0.150%

0.150%

Swaps

N/A

22/02/2018

N/A

949,351

0.186%

0.186%

Swaps

N/A

23/02/2018

N/A

475,078

0.093%

0.093%

Swaps

N/A

26/02/2018

N/A

919,977

0.180%

0.180%

Swaps

N/A

28/02/2018

N/A

506,900

0.099%

0.099%

Swaps

N/A

01/03/2018

N/A

2,887,784

0.565%

0.565%

Swaps

N/A

06/03/2018

N/A

402,410

0.079%

0.079%

Swaps

N/A

08/03/2018

N/A

1,365,400

0.267%

0.267%

Swaps

N/A

15/03/2018

N/A

1,493,100

0.292%

0.292%

Swaps

N/A

30/04/2018

N/A

300,000

0.059%

0.059%

Swaps

N/A

16/05/2018

N/A

22,486

0.004%

0.004%

Swaps

N/A

14/06/2018

N/A

340,327

0.067%

0.067%

Swaps

N/A

26/09/2018

N/A

2,300,000

0.450%

0.450%

Total (A+B+C)

Number of voting rights

Percentage of voting rights

38,663,916

7.569%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi

Merrill Lynch International - Above trading book exemption threshold

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

14. Contact name:

Daniel Rose

15. Contact telephone number:

020 7730 1111