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               15 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        63,875,615     4.29%       7,149,551    0.48%
securities
(2) Derivatives      2,067,708     0.14%       1,651,832    0.11%
(other than
options)
(3) Options and        895,625     0.06%         895,068    0.06%
agreements to
purchase/sell

Total               66,838,948     4.49%        9,696,451   0.65%


(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      20,160               Transfer
Purchase      29,800               7.4861
Purchase      32,868               Transfer
Purchase      1,511                7.4950
Purchase      32,789               7.4848
Purchase      2,002                7.4950
Purchase      36,136               7.5053
Purchase      2,905                7.4900
Purchase      37,445               7.5084
Purchase      5,400                Transfer
Sale          990                  7.4900
Sale          1,100                7.5000
Sale          990                  7.4900
Sale          1,650                7.4900
Sale          825                  7.4900
Sale          825                  7.4900
Sale          825                  7.4900
Sale          750                  7.5000
Sale          1,300                7.4900
Sale          1,320                7.4900
Sale          575                  7.4900
Sale          660                  7.4900
Sale          1,700                7.4856
Sale          1,155                7.4900
Sale          13,829               7.5000
Sale          315                  7.4900
Sale          730                  7.5000
Sale          2,640                7.4900
Sale          990                  7.4900
Sale          825                  7.4900
Sale          4,130                7.4900
Sale          1,155                7.4900
Sale          530                  7.5000
Sale          1,810                7.4900
Sale          9,996                7.4950
Sale          1,500                7.4900
Sale          793                  7.4856
Sale          2,100                7.4900
Sale          2,500                7.4856
Sale          905                  7.4900
Sale          833                  7.4900
Sale          2,975                7.4900
Sale          950                  7.5000
Sale          800                  7.5139
Sale          1,500                7.5000
Sale          499                  7.4950
Sale          500                  7.5000
Sale          2,100                7.4900
Sale          990                  7.4900
Sale          16,927               7.4880
Sale          660                  7.4900
Sale          984                  7.4900
Sale          1,650                7.4900
Sale          990                  7.4900
Sale          1,805                7.4900
Sale          1,400                7.5000
Sale          1,800                7.4900
Sale          1,500                7.5000
Sale          984                  7.4900
Sale          660                  7.4900
Sale          1,200                7.5000
Sale          1,320                7.4900
Sale          1,150                7.4900
Sale          500                  7.5000
Sale          36,525               7.5015
Sale          2,975                7.4900
Sale          3,300                7.4900
Sale          2,975                7.4900
Sale          1,915                7.4962
Sale          1,160                7.4900
Sale          800                  7.5000
Sale          1,485                7.4900
Sale          905                  7.4900
Sale          10,655               7.4910
Sale          650                  7.4958
Sale          1,320                7.4900
Sale          1,200                7.5000
Sale          2,475                7.4900
Sale          1,000                7.4900
Sale          3,174                7.4900
Sale          1,155                7.4900
Sale          1,000                7.5000
Sale          1,700                7.4900
Sale          634                  7.4856
Sale          9,990                7.4950
Sale          700                  7.5000
Sale          1,650                7.4900
Sale          490                  7.4900
Sale          1,320                7.4900
Sale          794                  7.4856
Sale          5,800                7.4900
Sale          16,720               7.4900
Sale          423                  7.4900
Sale          780                  7.5000
Sale          660                  7.4900
Sale          1,320                7.4900
Sale          2,310                7.4900
Sale          800                  7.5000
Sale          1,087                7.4900
Sale          990                  7.4900
Sale          1,485                7.4900
Sale          800                  7.5000
Sale          1,480                7.4900
Sale          1,480                7.4900
Sale          2,145                7.4900
Sale          2,479                7.5150
Sale          825                  7.4900
Sale          1,073                7.4985
Sale          1,000                7.5000
Sale          1,250                7.4615
Sale          2,480                7.4900
Sale          1,155                7.4900
Sale          32,868               Transfer
Sale          4,290                7.4900
Sale          575                  7.4900
Sale          971                  7.4900
Sale          990                  7.4900
Sale          660                  7.4900
Sale          1,650                7.4900
Sale          490                  7.4900
Sale          1,155                7.4900
Sale          575                  7.4900
Sale          1,320                7.4900
Sale          840                  7.5000
Sale          2,002                7.4950
Sale          3,624                7.5250
Sale          250,000              7.4900
Sale          825                  7.4900
Sale          484                  7.4900
Sale          4,000                7.4900
Sale          575                  7.4900
Sale          1,320                7.4900
Sale          431                  7.4900
Sale          3,721                7.4950
Sale          490                  7.4900
Sale          1,600                7.4900
Sale          950                  7.5000
Sale          900                  7.4900
Sale          550                  7.4908
Sale          740                  7.4900
Sale          1,650                7.4900
Sale          1,160                7.4900
Sale          1,100                7.4900
Sale          1,485                7.4900
Sale          25,370               7.4900
Sale          1,650                7.4900
Sale          1,810                7.4900
Sale          1,637                7.4900
Sale          600                  7.5000
Sale          750                  7.5000
Sale          990                  7.4900



(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        32789                 7.4847
CFD        Short        29800                 7.4861
CFD        Short        36136                 7.5052
CFD        Short        37445                 7.5083
CFD        Short        17492                 7.5153
CFD        Long         16927                 7.4880
CFD        Long         1073                  7.4984
CFD        Long         800                   7.5138

(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                         18 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