Rule 8.3 - SCOTTISH POWER PLC

FORM 8.3 DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE (Rule 8.3 of the City Code on Takeovers and Mergers) 1. KEY INFORMATION Name of person dealing BARCLAYS PLC (Note 1) Company dealt in SCOTTISH POWER PLC Class of relevant security ORD GBP0.42 to which the dealings being disclosed relate (Note 2) Date of dealing 19 April 2007 2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE (a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3) Long Short Number (%) Number (%) (1) Relevant 17,882,195 1.20% 42,980,289 2.89% securities (2) Derivatives 188,200 0.01% 3,866,794 0.26% (other than options) (3) Options and 0 0.00% 231 0.00% agreements to purchase/sell Total 18,070,395 1.21% 46,847,314 3.15% (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of Long Short relevant security: Number (%) Number (%) (1) Relevant securities 37,233,000 0.05 0 0.00% (2) Derivatives (other than options) 0 0.00% (3) Options and agreements to purchase/sell Total 0 0.00% 0 0.00% (c) Rights to subscribe (Note 3) Class of relevant security: Details 3. DEALINGS (Note 4) (a) Purchases and sales Purchase/sale Number of Securities Price per unit (GBP) Purchase 375,000 7.9528 Purchase 141,246 7.9375 Purchase 41,113 7.9400 Purchase 19,629 7.9679 Sale 14,500 7.9250 Sale 25,421 8.0129 Sale 1,568 7.9434 Sale 85,023 8.0161 Sale 134,462 8.0129 Sale 12,800 7.9290 Sale 542,532 8.0129 Sale 1,294,096 8.0129 Sale 518,098 8.0129 Sale 122,674 8.0129 Sale 221,034 8.0129 Sale 249,576 8.0129 Sale 1,305,595 8.0161 Sale 6,646,666 8.0129 Sale 11,016 8.0200 Sale 50,552 8.0129 Sale 139,107 8.0129 Sale 41,113 7.9400 Sale 668,191 8.0129 Sale 31,379 Transfer Sale 550 8.0200 Sale 4,656,96 8.0129 Sale 186,920 8.0186 Sale 7,785 Transfer Sale 190,159 8.0161 Sale 50,600 8.0129 Sale 98,414 8.0200 Sale 214,213 8.0200 Sale 601,235 8.0200 Sale 12,273 8.0200 Sale 2,927 Transfer Sale 53,127 8.0200 Sale 109,490 8.0129 Sale 81,715 8.0200 Sale 105,726 8.0129 Sale 29,904 8.0200 Sale 4,664 Transfer (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per Securities unit CFD Short 14124 6 7.9374 CFD Short 19629 7.9679 CFD Long 14500 7.925 CFD Long 12800 7.929 CFD Long 1568 7.9434 CFD Long 186920 8.0185 (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name, Writing, Number of Exercise Type, e.g. Expiry Option money e.g. call selling, securities to price American, date paid/received option purchasing, which the option European etc. per unit (GBP) varying etc. relates (GBP) (ii) Exercising Product name, e.g. Number of Exercise price per call option securities unit (Note 5) (d) Other dealings (including new securities) (Note 4) Nature of transaction Details Price per unit (Note 8) (if applicable) (Note 5) 4. OTHER INFORMATION None 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 8 attached? (Note 9) NO Date of disclosure 20 April 2007 Contact name BARCLAYS COMPLIANCE Telephone number 020 7116 2913 If a connected EFM, name of offeree/offeror with which connected If a connected EFM, state nature of connection (Note 10) Notes The Notes on Form 8.3 can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk

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Barclays (BARC)
UK 100

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