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

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

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

An event changing the breakdown of voting rights

Other (please specify):

Allotment of additional shares

x

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

Hawk Investment Holdings Limited (HIHL)

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

Hawk Investment Holdings Limited

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

22 May 2017

6. Date on which issuer notified:

5 July 2017

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

15%

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

ORDINARY SHARES

GB00BV9FPW93

13,589,450

13,589,450

13,589,450

13,589,450

14.85%

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

13,589,450

14.85%

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

HIHL holds 13,589,450 ordinary shares representing 14.85% of the voting rights. HIHL is owned by Morton PTC Limited as Trustee of the Morton Family Trust. The Board of Directors of the Morton PTC Limited are Albany Directors Limited, Mr Anthony David Holt, Mr Robert Walter Morton and Mrs Susan Margaret Howard Morton. The adult beneficiaries of the Morton Family Trust are Susan Margaret Howard Morton, Andrew Robert Morton, Edward George Morton, Charles Nicholas Morton and Robert Walter Morton.

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will ceaseto hold:

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

13. Additional information:

Albany Trustee Company Limited

14. Contact name:

Emma McIntosh

15. Contact telephone number:

01481 724136