Holding(s) in Company

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: 11

Serco Group 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

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):

3. Full name of person() subject to the notification obligation: 111

Orbis Holdings Limited (parent)

Orbis Investment Management Limited (investment manager and controlled undertaking)

4. Full name of shareholder(s)

(if different from 3.):'v

Vidacos Nominees Limited

HSBC Custody Nominees (Australia) Ltd

5. Date of the transaction and date on which the threshold is crossed or reached: v

18 August 2014

6. Date on which issuer notified:

19 August 2014

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

3%

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

880007973794

15,096,132

15,096 ,132

16,044,304

Below 3%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial

instrument

Expiration date XI II

Exercise/

Conversion Period xiv

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

% of voting rights

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

XV, XVI

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiraion 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

16,044,304

Below 3%

13. Additional information:

 Serco Group plc is disclosing this information in accordance with DTR 5.8.12

14. Contact name:

 Sarah Howfield

15. Contact telephone number:

01256 744272