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

12 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

17741

0 %

00

0 %

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

17741

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

130

243.5

PENCE

SALE

2186

243.5

PENCE

PURCHASE

1350

244

PENCE

PURCHASE

1995

244.25

PENCE

SALE

349

244.5

PENCE

PURCHASE

6621

244.5

PENCE

PURCHASE

395

244.75

PENCE

SALE

2673

244.75

PENCE

SALE

4432

245

PENCE

PURCHASE

1650

245.75

PENCE

PURCHASE

9337

246

PENCE

SALE

12537

246

PENCE

PURCHASE

21650

246.25

PENCE

SALE

5400

246.5

PENCE

PURCHASE

13433

246.75

PENCE

SALE

507

247

PENCE

PURCHASE

11928

247.25

PENCE

SALE

8388

247.5

PENCE

SALE

13197

247.532773

PENCE

PURCHASE

12711

247.652978

PENCE

SALE

35363

247.75

PENCE

PURCHASE

38168

247.75

PENCE

PURCHASE

712

248

PENCE

PURCHASE

13750

248.25

PENCE

SALE

13750

248.25

PENCE

PURCHASE

24069

248.5

PENCE

PURCHASE

24534

248.75

PENCE

SALE

45046

248.75

PENCE

SALE

1800

249

PENCE

PURCHASE

59077

249

PENCE

PURCHASE

15316

249.25

PENCE

SALE

45862

249.25

PENCE

PURCHASE

13120

249.5

PENCE

SALE

21911

249.5

PENCE

PURCHASE

11928

249.75

PENCE

SALE

30360

249.75

PENCE

PURCHASE

26571

250

PENCE

SALE

36649

250

PENCE

PURCHASE

25048

250.25

PENCE

SALE

39330

250.25

PENCE

PURCHASE

28635

250.5

PENCE

PURCHASE

6208

250.75

PENCE

SALE

14618

251.25

PENCE

SALE

12630

251.5

PENCE

SALE

6173

251.75

PENCE

PURCHASE

10736

252

PENCE

SALE

58137

252

PENCE

SALE

1800

252.25

PENCE

PURCHASE

28881

252.25

PENCE

PURCHASE

2000

252.5

PENCE

PURCHASE

92007479

160 PENCE

Total Purchases

92,417,432

Total Sales

413098

(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

15 December 2008

Contact name

Nimisha Sachdev

Telephone number

+44 (0)20 7568 9289

Name of offeree/offeror with which associated

BRITISH ENERGRY

Nature of connection (Note 9)

CONNECTED ADVISER