Holding(s) in Company

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

Serco Group Plc

GB0007973794

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

An acquisition or disposal of voting rights

n/a

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

n/a

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

n/a

An event changing the breakdown of voting rights

n/a

Other (please specify):

Increase in the number of ordinary shares

Yes

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

UBS Investment Bank

UBS Group AG

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

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

17 April 2015

6. Date on which issuer notified:

21 April 2015

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

Below Notifiable Threshold

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 xi

Indirect xii

Direct

Indirect

GB0007973794

17,510,691

17,510,691

-

-

Below Notifiable Threshold

-

Below Notifiable Threshold

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

Below Notifiable Threshold

Below Notifiable Threshold

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

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:

14. Contact name:

Katie Webb

15. Contact telephone number:

01256 745900