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 26 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 58,285,510 3.91% 47,616,234 3.20% securities (2) Derivatives 794,388 0.05% 2,984,677 0.20% (other than options) (3) Options and 0 0.00% 231 0.00% agreements to purchase/sell Total 59,079,898 3.97% 50,601,142 3.40% (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 42,401,000 0.06% 0 0.00% securities (2) Derivatives 0 0.00% (other than options) (3) Options and 0 0.00% 0 0.00% agreements to 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 1,596 7.9566 Purchase 11,338 7.9550 Purchase 35,741 7.9508 Purchase 18,658 7.9300 Purchase 97,152 7.9801 Purchase 2,897 7.9573 Purchase 500,000 7.9473 Purchase 10,000,000 7.9650 Purchase 1,604 7.9612 Purchase 300,000 7.9404 Purchase 47,715 7.9658 Purchase 550 7.9733 Purchase 107,447 7.9700 Sale 105,770 7.9709 Sale 205,332 7.9488 Sale 2,897 7.9384 Sale 510,843 7.9588 Sale 107,447 7.9700 Sale 1,111 7.9668 Sale 215,98 7.9514 Sale 585 7.9768 Sale 793 7.9668 Sale 25,621 7.9508 Sale 1,587 7.9568 Sale 800 7.9518 Sale 472 7.9668 Sale 107,447 7.9675 Sale 35,388 7.9481 Sale 500,000 7.9473 Sale 453,886 7.9709 Sale 2,600 7.9668 Sale 1,587 7.9618 Sale 146,913 7.9609 Sale 800 7.9518 Sale 1,500 7.9668 Sale 500,000 7.9473 Sale 9,100 7.9622 Sale 900 7.9420 Sale 473 7.9550 Sale 196,800 7.9709 Sale 131,184 7.9709 Sale 300,000 7.9125 Sale 17,560 7.9709 Sale 22,529 7.9629 Sale 124,127 7.9492 Sale 258 7.9768 NB: The below transactions which were previously disclosed have been cancelled Deal Date Purchase/Sale Number of Securities Price per unit (GBP) 21/03/2007 Sale 417,150 7.8282 20/03/2007 Purchase 278,100 7.7951 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) CFD Short 18658 7.93 CFD Short 300000 7.9403 CFD Short 35741 7.9507 CFD Short 1596 7.9565 CFD Short 2897 7.9573 CFD Short 1604 7.9611 CFD Short 47715 7.9658 CFD Short 9715 7.98 CFD Long 300000 7.9124 CFD Long 2897 7.9384 CFD Long 500000 7.9473 CFD Long 35388 7.9481 CFD Long 205332 7.9488 CFD Long 124127 7.9492 CFD Long 25621 7.9508 CFD Long 21598 7.9513 CFD Long 146913 7.9608 CFD Long 9100 7.9622 CFD Long 22529 7.9628 (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 27 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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