EPT Disclosure

FORM 38.5(b)

 DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS WITHOUT RECOGNISED INTERMEDIARY STATUS, OR WITH RI STATUS BUT NOT DEALING IN A CLIENT-SERVING CAPACITY (Rule 38.5(b) of the Takeover Code)

1. KEY INFORMATION

Name of exempt principal trader

UBS AG London Branch

Company dealt in

CENTRICA PLC

Class of relevant security to which the dealings being disclosed relate (Note 1)

6 14/91P ORDI

Date of dealing

11 DECEMBER 2008

2. INTERESTS SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a) Interests and short positions (following dealing) in the class of relevant security dealt in 

 (Note 2)

Long

Short

Number

(%)

Number

(%)

(1) Relevant securities

3407

0 %

91990000

2.48 %

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

3407

0 %

91990000

2.48 %

UBS AG London Branch also discloses that it has a long position of 85,750,000 nil paid rights*

(b) Interests and short positions in relevant securities of the company, other than the class dealt in

(Note 2)

Class of relevant security:

Long

Short

Number (%)

(%)

(1) Relevant securities

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

(c) Rights to subscribe

 (Note 2)

Class of relevant security:

Details

3. DEALINGS 

(Note 3)

(a) Purchases and sales

Purchase/sale

Number of securities

Price per unit

(Note 4)

SALE

13580

238.5

PENCE

PURCHASE

15067

238.75

PENCE

SALE

42353

239.25

PENCE

PURCHASE

17418

239.5

PENCE

SALE

1115

239.75

PENCE

PURCHASE

1487

239.75

PENCE

PURCHASE

16544

240

PENCE

SALE

508519

240

PENCE

PURCHASE

1750

240.25

PENCE

SALE

6550

240.25

PENCE

PURCHASE

12797

240.5

PENCE

SALE

507400

240.5

PENCE

SALE

14897

240.75

PENCE

PURCHASE

19744

241

PENCE

SALE

506980

241

PENCE

SALE

27984

241.25

PENCE

SALE

699

241.5

PENCE

PURCHASE

25942

241.5

PENCE

SALE

10880

241.75

PENCE

PURCHASE

16171

241.75

PENCE

SALE

43191

242

PENCE

PURCHASE

50813

242

PENCE

SALE

29623

242.25

PENCE

PURCHASE

36546

242.25

PENCE

PURCHASE

5910

242.5

PENCE

SALE

17265

242.5

PENCE

PURCHASE

1230

242.75

PENCE

SALE

17366

242.75

PENCE

SALE

10602

242.878796

PENCE

SALE

21425

243

PENCE

PURCHASE

24971

243

PENCE

SALE

10105

243.25

PENCE

PURCHASE

13631

243.25

PENCE

SALE

14294

243.5

PENCE

SALE

12971

243.75

PENCE

PURCHASE

25942

244

PENCE

SALE

151425

244

PENCE

SALE

200609

244.25

PENCE

PURCHASE

19971

244.5

PENCE

SALE

92206

244.5

PENCE

PURCHASE

10950

244.75

PENCE

SALE

62971

244.75

PENCE

PURCHASE

18092

245

PENCE

SALE

102200

245

PENCE

SALE

17602

245.25

PENCE

PURCHASE

41907

245.25

PENCE

SALE

9068

245.75

PENCE

PURCHASE

5726

246.5

PENCE

SALE

1700

246.75

PENCE

SALE

2832

247

PENCE

SALE

861

247.25

PENCE

SALE

5985

247.5

PENCE

SALE

1671

247.75

PENCE

PURCHASE

2837

248

PENCE

SALE

1611

248.5

PENCE

PURCHASE

12971

248.5

PENCE

SALE

2630

248.75

PENCE

SALE

1079

249

PENCE

PURCHASE

6215

249

PENCE

SALE

10243

250.25

PENCE

SALE

1924

250.75

PENCE

PURCHASE

18993

250.75

PENCE

PURCHASE

4291

250.946632

PENCE

PURCHASE

3379

251

PENCE

SALE

64748

251

PENCE

SALE

9228

251.25

PENCE

SALE

11342

251.5

PENCE

PURCHASE

90330

251.5

PENCE

PURCHASE

1572

251.75

PENCE

SALE

3545

251.75

PENCE

PURCHASE

3227

252

PENCE

Total Purchases

526424

Total Sales

2573279

(b) Derivative transactions (other than options)

Product name, e.g. CFD

Long/short

 (Note 5)

Number of securities

 (Note 6)

Price per unit

(Note 4)

(c) Options transactions in respect of existing securities

(i) Writing, selling, purchasing or varying 

Product name, e.g. call option

Writing, selling, purchasing, varying etc

Number of securities to which the option relates (Note 6)

Exercise price

Type, e.g. American,European etc.

Expiry date

Option money paid/received per unit (Note 4)

(ii) Exercising

Product name, e.g. call option

Number of securities

 Exercise price per unit

(Note 4)

(d) Other dealings (including new securities) 

(Note 3)

Natute of transaction

(Note 7)

Details

Price per unit (if applicable) 

(Note 4)

4. OTHER INFORMATION

Agreements, arrangements or understandings relating to options or derivatives

Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated.

Is a Supplemental Form 38.5(b) attached?

(Note 8)

YES/NO

Date of disclosure

12 December 2008

Contact name

Nimisha Sachdev

Telephone number

+44 (0)20 7568 9289

Name of offeree/offeror with which associated

BRITISH ENERGY GROUP PLC

Nature of connection (Note 9)

CONNECTED ADVISER

Notes

The Notes on Form 38.5(b) can be viewed on the Takeover Panel's website at http://www.thetakeoverpanel.org.uk/