Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

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

Premier Technical Services Group Plc

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

An acquisition or disposal of voting rights

Yes

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

No

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

No

An event changing the breakdown of voting rights

No

Other (please specify):

Change in Ownership of Shareholder

No

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

First Pacific Advisors, LLC

4. Full name of shareholder(s)  (if different from 3.):iv

· FPA Global Opportunity Fund (a series of FPA Hawkeye Fund, LLC0

· FPA Value Partners Fund (series of FPA Hawkeye Fund, LLC)

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

06 April 2017

6. Date on which issuer notified:

07 April 2017

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

18.1%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00BV9FPW93

15,191,128

15,191,128

15,950,728

15,950,728

18.10%

Common Stock

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

15,950,728

18.10%

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

First Pacific Advisors, LLC ("FPA") is an investment adviser registered with the U.S. Securities and Exchange Commission. FPA provides investment management services on a discretionary basis to the accounts listed below. The number and percentage of Common Stock shares in the issuer held by each such account is as follows:

FPA Global Opportunity Fund: 14,598,228 Common Stock shares (16.56%)

FPA Funds Trust - FPA International Value Fund: 1,352,500 Common Stock shares (1.54%)

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:

Marie McAvenia

15. Contact telephone number:

310-996-5432