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 29 March 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 57,545,595 3.86% 47,816,475 3.21% securities (2) Derivatives 490,777 0.03% 2,699,469 0.18% (other than options) (3) Options and 0 0.00% 231 0.00% agreements to purchase/sell Total 58,036,372 3.90% 50,516,175 3.39% (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 45,484,000 0.06% 0 0.00% securities (2) Derivatives 0 0.00% (other than options) (3) Options and agreements to 0 0.00% 0 0.00% purchase/sell Total (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 36,333 8.0379 Purchase 45,289 8.0100 Purchase 231,550 8.0042 Purchase 10,525 8.0042 Purchase 294 Transfer Purchase 543 7.9992 Purchase 1,693 7.9992 Purchase 2,967 8.0300 Purchase 4,578 8.0300 Purchase 5,131 8.0310 Purchase 23 8.0213 Purchase 294 Transfer Purchase 15,120 8.0300 Purchase 4,434 8.0100 Purchase 181,644 8.0100 Purchase 75,000 8.0277 Purchase 3,131 8.0300 Purchase 280,000 8.0100 Purchase 6,078 8.0100 Purchase 146 8.0300 Purchase 2,855 8.0016 Purchase 425,000 8.0123 Purchase 84,200 8.0042 Sale 33 8.0376 Sale 807 8.0376 Sale 14,579 7.9991 Sale 830 8.0376 Sale 150,000 8.0419 Sale 940 8.0376 Sale 350 8.0168 Sale 6,078 8.0100 Sale 45,289 8.0100 Sale 131,200 8.0042 Sale 1,000 8.0118 Sale 794 8.0218 Sale 286,000 7.9991 Sale 14,060 8.0100 Sale 131,200 8.0042 Sale 652 8.0400 Sale 7,165 8.0200 Sale 1,928 8.0218 Sale 280,000 8.0100 Sale 94,704 8.0355 Sale 280,000 8.0100 Sale 625 8.0300 Sale 800 8.0168 Sale 4,434 8.0100 Sale 300 8.0218 Sale 100,009 8.0213 Sale 28,075 8.0300 Sale 952 8.0426 Sale 181,644 8.0100 Sale 163,975 8.0042 NB: The below transactions which were previously disclosed have been cancelled Deal Date Purchase/Sale Number of Securities Price per unit (GBP) 26/03/2007 Sale 196,800 7.9709 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) CFD Short 476000 7.967 CFD Short 718264 7.9732 CFD Short 2855 8.0016 CFD Short 23 8.0213 CFD Short 9225 8.03 CFD Short 5131 8.031 CFD Short 36333 8.0378 CFD Long 280000 8.01 CFD Long 100009 8.0213 CFD Long 32000 8.0342 CFD Long 6270 8.0361 (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 30 March 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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