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               12 December 2006

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        64,226,320     4.32%      10,294,109    0.69%
securities
(2) Derivatives      2,677,069     0.18%       1,354,800    0.09%
(other than
options)
(3) Options and      2,564,742     0.17%       3,574,136    0.24%
agreements to
purchase/sell

Total               69,468,131     4.67%      15,223,045    1.02%


(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
Scottish Power Plc GBP                    (%)                       (%)
(1) Relevant
securities

(2) Derivatives
(other than
options)

(3) Options and
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      175,508              7.5212
Purchase      11,246               7.5145
Purchase      2,327                Transfer
Purchase      400,000              7.5224
Purchase      10,080               Transfer
Purchase      60,919               7.5250
Purchase      7,981                7.5250
Purchase      1,101                7.5200
Purchase      150,000              7.5170
Purchase      86,642               7.5198
Sale          5,000                7.5250
Sale          3,061                7.5234
Sale          1,500                7.5250
Sale          2,000                7.5250
Sale          3,000                7.5250
Sale          2,500                7.5250
Sale          1,500                7.5250
Sale          700                  7.5250
Sale          400,000              7.5224
Sale          3,000                7.5250
Sale          2,000                7.5250
Sale          2,000                7.5250
Sale          2,000                7.5250
Sale          1,500                7.5250
Sale          7,000                7.5250
Sale          30,000               7.5250
Sale          1,000                7.5250
Sale          1,500                7.5250
Sale          1,000                7.5250
Sale          700                  7.5250
Sale          1,500                7.5250
Sale          2,000                7.5250
Sale          2,000                7.5250
Sale          1,100                7.5250
Sale          3,000                7.5250
Sale          27,837               7.5216
Sale          2,500                7.5250
Sale          600                  7.5250
Sale          2,000                7.5250
Sale          4,000                7.5250
Sale          5,000                7.5250
Sale          1,200                7.5250
Sale          2,500                7.5250
Sale          96,000               7.5169
Sale          2,500                7.5250
Sale          10,000               7.5250
Sale          3,000                7.5250
Sale          5,000                7.5250
Sale          4,000                7.5250
Sale          5,000                7.5250
Sale          1,000                7.5250
Sale          1,000                7.5250
Sale          5,000                7.5250
Sale          2,500                7.5250
Sale          1,500                7.5250
Sale          3,000                7.5250
Sale          1,200                7.5250
Sale          2,000                7.5250
Sale          2,500                7.5250
Sale          5,000                7.5250
Sale          3,000                7.5250
Sale          1,428                7.5250
Sale          1,010                7.5250
Sale          1,000                7.5250
Sale          1,000                7.5250
Sale          400                  7.5162
Sale          2,000                7.5250
Sale          2,000                7.5250
Sale          2,000                7.5250
Sale          1,000                7.5250
Sale          1,500                7.5250
Sale          5,000                7.5250
Sale          1,400                7.5250
Sale          539                  7.5250
Sale          800                  7.5250
Sale          2,000                7.5250
Sale          500                  7.5250
Sale          2,000                7.5250
Sale          500                  7.5250
Sale          1,000                7.5250
Sale          7,000                7.5250
Sale          262,400              7.4941
Sale          3,174                7.5250
Sale          600                  7.5250
Sale          600                  7.5250
Sale          1,000                7.5250
Sale          269                  7.5165
Sale          1,000                7.5250
Sale          4,000                7.5250
Sale          1,500                7.5250
Sale          5,250                7.5250
Sale          1,300                7.5250
Sale          1,500                7.5250
Sale          20,000               7.5250
Sale          3,000                7.5250
Sale          7,000                7.5250
Sale          1,874                7.5312
Sale          400,000              7.5224
Sale          1,000                7.5250
Sale          2,000                7.5250
Sale          1,000                7.5250
Sale          1,500                7.5250
Sale          4,500                7.5250
Sale          4,000                7.5250
Sale          1,000                7.5250
Sale          1,000                7.5250
Sale          1,250                7.5250
Sale          2,500                7.5250
Sale          1,500                7.5250
Sale          515                  7.5250
Sale          472                  7.5250
Sale          1,500                7.5250
Sale          600                  7.5165
Sale          326                  7.5165
Sale          1,000                7.5250
Sale          1,500                7.5250
Sale          2                    7.5300
Sale          3,174                7.5250
Sale          2,000                7.5250
Sale          3,500                7.5250
Sale          2,500                7.5250
Sale          2,000                7.5250

(b)  Derivatives transactions (other than options)

Product    Long/Short   Number of Securities  Price Per
name,      (Note 6)     (Note 7)              Unit (GBP)
e.g. CFD
CFD        Short        11246                 7.5145
CFD        Short        3425                  7.5177
CFD        Short        86642                 7.5197
CFD        Short        175508                7.5211
CFD        Short        500000                7.8032
CFD        Long         27837                 7.5215
CFD        Long         400000                7.5223
CFD        Long         3061                  7.5234
CFD        Long         2                     7.5300

(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

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                         13 December 2006
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