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

17 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)

SALE

4805

238

PENCE

PURCHASE

9443

238

PENCE

PURCHASE

2425

238.25

PENCE

SALE

3227

238.25

PENCE

SALE

11652

238.5

PENCE

PURCHASE

38310

238.5

PENCE

SALE

2130

238.75

PENCE

PURCHASE

9491

238.75

PENCE

SALE

1195

239

PENCE

PURCHASE

27596

239

PENCE

PURCHASE

1502

239.25

PENCE

PURCHASE

519

239.5

PENCE

SALE

3633

239.75

PENCE

PURCHASE

10321

239.75

PENCE

PURCHASE

33423

240

PENCE

SALE

36389

240

PENCE

PURCHASE

32427

240.25

PENCE

PURCHASE

3526

240.5

PENCE

SALE

8671

240.5

PENCE

SALE

15829

240.5

SALE

10656

240.75

PENCE

PURCHASE

23396

240.75

PENCE

PURCHASE

21488

241

PENCE

SALE

23943

241

PENCE

PURCHASE

4228

241.25

PENCE

SALE

8062

241.25

PENCE

PURCHASE

5233

241.5

PENCE

SALE

17057

241.5

PENCE

PURCHASE

2300

241.75

SALE

4400

241.75

PENCE

PURCHASE

25096

241.75

PENCE

SALE

11407

242

PENCE

PURCHASE

12923

242

PENCE

SALE

3250

242.25

SALE

20935

242.25

PENCE

PURCHASE

47858

242.25

PENCE

PURCHASE

18114

242.5

PENCE

SALE

33975

242.5

PENCE

PURCHASE

14961

242.75

PENCE

SALE

29799

242.75

PENCE

PURCHASE

13801

243

PENCE

SALE

17819

243

PENCE

SALE

26151

243.25

PENCE

PURCHASE

29453

243.25

PENCE

PURCHASE

21793

243.5

PURCHASE

22442

243.5

PENCE

SALE

26383

243.5

PENCE

PURCHASE

794

243.75

PENCE

SALE

51312

243.75

PENCE

PURCHASE

1760

244

SALE

9405

244

PENCE

PURCHASE

28304

244

PENCE

SALE

10806

244.25

PURCHASE

13282

244.25

PENCE

SALE

18731

244.25

PENCE

PURCHASE

3560

244.5

SALE

20417

244.5

PENCE

PURCHASE

23513

244.5

PENCE

PURCHASE

40

244.75

PURCHASE

7878

244.75

PENCE

SALE

18793

244.75

PENCE

PURCHASE

4150

245

PURCHASE

9057

245

PENCE

SALE

12468

245

PENCE

PURCHASE

21317

245.25

PENCE

SALE

35515

245.25

PENCE

SALE

1760

245.5

PURCHASE

4790

245.5

PENCE

SALE

12347

245.5

PENCE

PURCHASE

3983

245.75

PENCE

SALE

38579

245.75

PENCE

SALE

2996

246

PENCE

Total Purchases

554497

Total Sales

554497

(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

18 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