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

09 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

00

0 %

88438777

2.38 %

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

00

0 %

88438777

2.38 %

(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)

PURCHASE

00

0

PENCE

SALE

6133

213

PENCE

SALE

16468

213.25

PENCE

SALE

3150

213.75

PENCE

SALE

4941

214.75

PENCE

SALE

16609

215

PENCE

SALE

6558

215.75

PENCE

PURCHASE

18169

216

PENCE

SALE

3348

216.25

PENCE

PURCHASE

5345

216.25

PENCE

PURCHASE

8947

216.75

PENCE

SALE

13870

217

PENCE

PURCHASE

16468

217.25

PENCE

SALE

2797

217.75

PENCE

SALE

8351

218

PENCE

PURCHASE

18669

218.25

PENCE

SALE

5000

219.75

PENCE

PURCHASE

8809

220

PENCE

SALE

2398

220.5

PENCE

SALE

14506

221.75

PENCE

SALE

17533

222

PENCE

PURCHASE

3927

222.25

PENCE

SALE

25922

222.25

PENCE

SALE

13536

222.5

PENCE

PURCHASE

2326

223

PENCE

SALE

4656

223

PENCE

PURCHASE

4758

223.25

PENCE

SALE

12361

223.75

PENCE

PURCHASE

17261

223.75

PENCE

SALE

42381

224.25

PENCE

SALE

22060

224.5

PENCE

SALE

1700

225.75

PENCE

SALE

2888

227.25

PENCE

SALE

12199

227.5

PENCE

PURCHASE

38536

227.5

PENCE

SALE

34626

227.75

PENCE

PURCHASE

57952

228

PENCE

SALE

139619

228

PENCE

SALE

136000

228.070353

PENCE

PURCHASE

19181

228.25

PENCE

SALE

28668

228.25

PENCE

PURCHASE

25780

228.5

PENCE

SALE

205322

228.5

PENCE

SALE

14099

228.75

PENCE

PURCHASE

47830

228.75

PENCE

SALE

61131

229

PENCE

SALE

39248

229.25

PENCE

PURCHASE

83393

229.25

PENCE

PURCHASE

30407

229.5

PENCE

SALE

41468

229.5

PENCE

PURCHASE

30605

229.75

PENCE

SALE

81564

229.75

PENCE

PURCHASE

743

230

PENCE

SALE

168787

230

PENCE

SALE

7301

230.25

PENCE

PURCHASE

23411

230.25

PENCE

PURCHASE

81514

230.295262

PENCE

PURCHASE

19344

230.5

PENCE

SALE

58700

230.5

PENCE

PURCHASE

18902

230.75

PENCE

SALE

21363

230.75

PENCE

SALE

34337

231

PENCE

PURCHASE

56144

231

PENCE

PURCHASE

4319

231.25

PENCE

SALE

7628

231.25

PENCE

SALE

16783

231.5

PENCE

PURCHASE

49181

231.5

PENCE

PURCHASE

9987

231.75

PENCE

PURCHASE

24109

232

PENCE

SALE

55332

232

PENCE

SALE

12054

232.25

PENCE

PURCHASE

26855

232.25

PENCE

SALE

6714

232.5

PENCE

PURCHASE

55115

232.5

PENCE

SALE

1064

232.75

PENCE

PURCHASE

7005

232.75

PENCE

SALE

1885

233

PENCE

PURCHASE

35107

233

PENCE

PURCHASE

20359

233.25

PENCE

SALE

37470

233.25

PENCE

SALE

69645

233.5

PENCE

SALE

11438

234

PENCE

SALE

3231

234.5

PENCE

SALE

7918

234.75

PENCE

SALE

770

235

PENCE

PURCHASE

1850

235

PENCE

SALE

382

235.25

PENCE

Total Purchases

872308

Total Sales

1563912

(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

10 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/