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

Ultra Electronics Holdings 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

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(s) subject to thenotification obligation: iii

Ameriprise Financial, Inc. and its group

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

See additional Information under 13.

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

01 May 2013

6. Date on which issuer notified:

03 May 2013

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

Below the threshold of 5%

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

GB0009123323

3,599,863

3,599,863

31,942

31,942

3,375,931

0.046%

4.856%

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

N/A

N/A

N/A

N/A

N/A

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

CFD

5,497

Nominal

Delta

0.008%

Total (A+B+C)

Number of voting rights

Percentage of voting rights

3,413,370

4.909%

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

Ameriprise Financial, Inc. which through intermediate holding companies controls the voting rights of Columbia Management Investment Advisers, Columbia Wanger Asset Management, Threadneedle Management Luxembourg S.A. and Threadneedle Asset Management Holdings Ltd, which itself controls the voting rights of Threadneedle Asset Management Ltd, Threadneedle International Ltd and Threadneedle Pensions Ltd.

Proxy Voting:

10. Name of the proxy holder:

N/A

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

N/A

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

N/A

13. Additional information:

Registered Owner

Littledown Nominees Ltd

A/c ZLA08

7,967

The Bank of New York (Nominees) Ltd

A/c 5340899759

6,467

Littledown Nominees Ltd

A/c 39364

729,730

The Bank of New York (Nominees) Ltd

A/c 52401 81

11,498

Ameriprise Financial Inc

A/c

219,520

HSBC Global Custody Nominees (UK) Ltd

A/c 5000212310

87,555

The Bank of New York (Nominees) Ltd

A/c PTG 10972

52,168

The Bank of New York (Nominees) Ltd

A/c PTG 14556

5,497

Vidacos Nominees

A/c 6012918307

229,358

HSBC Global Custody Nominees (UK) Ltd

A/c 740191

23,943

HSBC Global Custody Nominees (UK) Ltd

A/c 739874

109,357

HSBC Global Custody Nominees (UK) Ltd

A/c 740311

11,935

The Bank of New York (Nominees) Ltd

A/c PTG 15303/09997799

17,412

HSBC Global Custody Nominees (UK) Ltd

A/c 811056

12,420

Chase Nominees Ltd

A/c 44729

26,637

Nortrust Nominees Ltd

A/c BBH05

38,001

William & Glyns (Isle of Man) Nominees Ltd

A/c 301778

14,058

William & Glyns (Isle of Man) Nominees Ltd

A/c 301781

6,620

Littledown Nominees Ltd

A/c ZLA05

82,300

Littledown Nominees Ltd

A/c ZLA07

720,000

Littledown Nominees Ltd

A/c 07198

1,375

Littledown Nominees Ltd

A/c 07197

24,100

Littledown Nominees Ltd

A/c ZLA09

4,613

Littledown Nominees Ltd

A/c 10479

1,612

State Street Bank & Trust Boston

A/c GPE1

101,783

Littledown Nominees Ltd

A/c ZLA12

28,318

Littledown Nominees Ltd

A/c ZLA14

7,550

Littledown Nominees Ltd

A/c 34789

40,700

Littledown Nominees Ltd

A/c 10491

458,321

Littledown Nominees Ltd

A/c 10488

132,086

Littledown Nominees Ltd

A/c 31348

200,469

14. Contact name:

Stacey Dryburgh, Threadneedle Group

15. Contact telephone number:

01793 363 751