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

22 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 %

00

0 %

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

00

0 %

00

0 %

(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

1460

241.75

PENCE

PURCHASE

1800

241.75

PENCE

SALE

340

242

PENCE

PURCHASE

482

242

PENCE

PURCHASE

6200

242.25

PENCE

SALE

9088

242.5

PENCE

PURCHASE

20789

242.5

PENCE

PURCHASE

7286

242.75

PENCE

PURCHASE

12066

243

PENCE

PURCHASE

8400

243.25

PENCE

SALE

2623

243.5

PENCE

PURCHASE

3600

243.5

PENCE

PURCHASE

5983

243.5

PENCE

SALE

1088

243.75

PENCE

PURCHASE

5340

243.75

PENCE

PURCHASE

2135

244

PENCE

SALE

2135

244

PENCE

PURCHASE

12818

244

PENCE

SALE

17877

244

PENCE

PURCHASE

995

244.25

PENCE

SALE

2150

244.25

PENCE

PURCHASE

8678

244.25

PENCE

SALE

18751

244.5

PENCE

PURCHASE

1881

244.75

PENCE

PURCHASE

14130

244.75

PENCE

PURCHASE

2691

245

PENCE

PURCHASE

3324

245

PENCE

SALE

4045

245

PENCE

SALE

24576

245

PENCE

SALE

2751

245.25

PENCE

PURCHASE

5983

245.25

PENCE

PURCHASE

9041

245.25

PENCE

SALE

2606

245.5

PENCE

PURCHASE

13787

245.5

PENCE

PURCHASE

814

245.75

PENCE

SALE

1016

245.75

PENCE

PURCHASE

5508

245.75

PENCE

PURCHASE

563

246

PENCE

PURCHASE

12945

246

PENCE

SALE

28248

246

PENCE

PURCHASE

2517

246.25

PENCE

PURCHASE

4099

246.25

PENCE

SALE

5362

246.25

PENCE

SALE

26148

246.5

PENCE

PURCHASE

8300

246.75

PENCE

SALE

8790

246.75

PENCE

PURCHASE

1293

247

PENCE

SALE

25962

247

PENCE

SALE

6034

247.25

PENCE

SALE

2927

247.5

PENCE

SALE

7019

247.75

PENCE

PURCHASE

8712

247.75

PENCE

PURCHASE

5983

248.75

PENCE

PURCHASE

3825

249

PENCE

SALE

7485

249

PENCE

SALE

2468

249.5

PENCE

SALE

8774

249.5

PENCE

PURCHASE

19486

249.5

PENCE

PURCHASE

654

249.75

PENCE

SALE

4213

249.75

PENCE

SALE

8578

249.75

PENCE

SALE

12564

250

PENCE

PURCHASE

12627

250.25

PENCE

SALE

1394

250.5

PENCE

PURCHASE

10143

250.75

PENCE

SALE

5941

251

PENCE

PURCHASE

11966

251

PENCE

PURCHASE

17676

251

PENCE

PURCHASE

904

251.25

PENCE

SALE

2200

251.25

PENCE

PURCHASE

3900

251.25

PENCE

PURCHASE

1300

251.5

PENCE

SALE

1480

251.5

PENCE

SALE

2445

251.5

PENCE

PURCHASE

11620

251.5

PENCE

PURCHASE

7466

251.75

PENCE

PURCHASE

19695

252

PENCE

PURCHASE

1540

252.25

PENCE

PURCHASE

2594

252.25

PENCE

PURCHASE

2560

252.5

PENCE

SALE

9117

252.5

PENCE

PURCHASE

4988

252.75

PENCE

PURCHASE

4670

253

PENCE

SALE

4619

253.25

PENCE

PURCHASE

5938

253.25

PENCE

PURCHASE

2340

253.5

PENCE

SALE

5430

253.5

PENCE

PURCHASE

12185

253.5

PENCE

SALE

72940

253.5

PENCE

PURCHASE

975

253.75

PENCE

SALE

8284

253.75

PENCE

SALE

6000

254

PENCE

PURCHASE

8600

254

PENCE

SALE

3787

254.25

PENCE

Total Purchases

367255

Total Sales

367255

(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

23 December 2008

Contact name

Nimisha Sachdev

Telephone number

+44 (0)20 7568 9289

Name of offeree/offeror with which associated

BRITISH ENERGY

Nature of connection (Note 9)

CONNECTED ADVISER