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

10 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

262

0 %

89940000

2.42 %

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

262

0 %

89940000

2.42 %

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)

PURCHASE

9012

230.5

PENCE

PURCHASE

395

230.75

PENCE

SALE

18319

230.75

PENCE

PURCHASE

5301

231

PENCE

PURCHASE

14149

231.25

PENCE

SALE

08

231.5

PENCE

PURCHASE

5355

231.5

PENCE

PURCHASE

3861

231.75

PENCE

SALE

15220

231.75

PENCE

PURCHASE

21014

232

PENCE

SALE

46046

232

PENCE

SALE

13293

232.125

PENCE

SALE

8528

232.25

PENCE

PURCHASE

46162

232.25

PENCE

SALE

7226

232.375

PENCE

SALE

28556

232.5

PENCE

PURCHASE

45804

232.5

PENCE

PURCHASE

31878

232.75

PENCE

SALE

80511

232.75

PENCE

PURCHASE

19536

233

PENCE

SALE

143116

233

PENCE

SALE

19725

233.25

PENCE

PURCHASE

34758

233.25

PENCE

PURCHASE

29606

233.5

PENCE

SALE

51437

233.5

PENCE

PURCHASE

8888

233.75

PENCE

SALE

47524

233.75

PENCE

PURCHASE

8763

234

PENCE

SALE

21677

234

PENCE

PURCHASE

6331

234.125

PENCE

PURCHASE

28662

234.25

PENCE

SALE

37114

234.25

PENCE

PURCHASE

6331

234.375

PENCE

PURCHASE

51729

234.5

PENCE

SALE

115566

234.5

PENCE

PURCHASE

22890

234.75

PENCE

SALE

100550

234.75

PENCE

PURCHASE

46115

235

PENCE

SALE

411068

235

PENCE

PURCHASE

38478

235.25

PENCE

SALE

96264

235.25

PENCE

PURCHASE

28793

235.5

PENCE

SALE

45637

235.5

PENCE

PURCHASE

29714

235.75

PENCE

SALE

94659

235.75

PENCE

PURCHASE

1261

236

PENCE

SALE

91781

236

PENCE

SALE

46031

236.25

PENCE

SALE

121641

236.5

PENCE

PURCHASE

22649

236.75

PENCE

SALE

24179

236.75

PENCE

SALE

50950

237

PENCE

SALE

3919

237.75

PENCE

SALE

8435

238

PENCE

SALE

16582

238.25

PENCE

SALE

2759

238.5

PENCE

PURCHASE

5794

238.5

PENCE

PURCHASE

20653

238.75

PENCE

SALE

22222

238.75

PENCE

PURCHASE

17274

239

PENCE

SALE

182875

239

PENCE

PURCHASE

4477

239.25

PENCE

SALE

133963

239.25

PENCE

SALE

30085

239.5

PENCE

SALE

19614

239.75

PENCE

SALE

3022

240

PENCE

PURCHASE

43508

240

PENCE

Total Purchases

659141

Total Sales

2160102

(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

11 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/