Rule 8.3 - BANCO SANTANDER SA

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              BANCO SANTANDER SA
Class of relevant security    EUR0.50(REGD)
to which the dealings being
disclosed relate (Note 2)
Date of dealing               16 July 2008

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     370,991,249     5.93%     4,719,374       0.08%
securities
(2) Derivatives   48,879,368     0.78%    83,201,872       1.33%
(other than
options)
(3) Options and   26,447,585     0.42%    25,626,028       0.41%
agreements to
purchase/sell
Total            446,318,202     7.14%   113,547,274       1.82%


(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

(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
Purchase      17,054               11.0086 EUR
Purchase      300,000              10.8058 EUR
Purchase      140                  10.7716 EUR
Purchase      500                  10.7500 EUR
Purchase      9,200                10.7952 EUR
Purchase      736                  Transfer
Purchase      193,463              10.7925 EUR
Purchase      1,000                10.7600 EUR
Purchase      1,000                10.9100 EUR
Purchase      437                  10.9400 EUR
Purchase      1,400                10.7600 EUR
Purchase      2,700                10.8500 EUR
Purchase      13,300               10.7968 EUR
Purchase      2,439                11.0623 EUR
Purchase      1,375                10.8800 EUR
Purchase      203,691              11.1317 EUR
Purchase      726                  Transfer
Purchase      200                  10.8000 EUR
Purchase      1,825                10.8100 EUR
Purchase      5,874                11.0600 EUR
Purchase      20,718               10.9600 EUR
Purchase      8,685                10.8772 EUR
Purchase      368                  11.0600 EUR
Purchase      8,220                11.0249 EUR
Purchase      1,000                10.6600 EUR
Purchase      842                  11.0600 EUR
Purchase      13,368               10.9089 EUR
Purchase      300,548              11.0600 EUR
Purchase      229                  Transfer
Purchase      61,583               10.9089 EUR
Sale          657                  10.8184 EUR
Sale          3,033                10.8184 EUR
Sale          2                    10.8084 EUR
Sale          3,432                10.8084 EUR
Sale          5,437                10.8084 EUR
Sale          5,531                10.7984 EUR
Sale          593                  10.8084 EUR
Sale          2,375                10.8284 EUR
Sale          3,007                10.7984 EUR
Sale          100                  10.8184 EUR
Sale          500                  10.8184 EUR
Sale          26,705               10.8084 EUR
Sale          500                  10.8084 EUR
Sale          3,380                10.8084 EUR
Sale          1,441                10.8184 EUR
Sale          6,000                10.7984 EUR
Sale          3,790                10.7984 EUR
Sale          900                  10.8184 EUR
Sale          3,475                10.8084 EUR
Sale          698                  10.8084 EUR
Sale          1,000                10.8284 EUR
Sale          245,650              10.8371 EUR
Sale          45                   10.8084 EUR
Sale          2,911                10.8084 EUR
Sale          27,907               10.8084 EUR
Sale          11,469               10.8084 EUR
Sale          2,699                10.8184 EUR
Sale          1,053                10.8084 EUR
Sale          4,198                10.8084 EUR
Sale          117                  10.8084 EUR
Sale          3,389                10.8084 EUR
Sale          6,445                10.8084 EUR
Sale          17,435               10.7984 EUR
Sale          900                  10.8284 EUR
Sale          2,355                10.8184 EUR
Sale          1                    10.8084 EUR
Sale          92                   10.8284 EUR
Sale          155                  10.9800 EUR
Sale          500                  10.8084 EUR
Sale          2,173                10.8084 EUR
Sale          8,220                11.0142 EUR
Sale          4,744                10.8084 EUR
Sale          900                  10.8184 EUR
Sale          12,400               10.9600 EUR
Sale          12,017               10.8084 EUR
Sale          10,000               10.8084 EUR
Sale          2,047                10.8084 EUR
Sale          2,700                10.8184 EUR
Sale          4,329                10.8184 EUR
Sale          3,223                10.8284 EUR
Sale          1,800                10.8284 EUR
Sale          6,279                10.8084 EUR
Sale          1,800                10.8184 EUR
Sale          28,300               10.8084 EUR
Sale          2,477                10.8084 EUR
Sale          2,559                10.8084 EUR
Sale          2,008                10.8284 EUR
Sale          15,000               11.0368 EUR
Sale          3,035                10.8084 EUR
Sale          84,037               11.0600 EUR
Sale          136,800              11.0600 EUR
Sale          105,171              11.0600 EUR
Sale          358,576              11.2300 EUR
Sale          300                  10.8084 EUR
Sale          11,149                11.0600 EUR
Sale          26,749               10.8139 EUR
Sale          2,261                10.8084 EUR
Sale          2,016                10.8284 EUR
Sale          78                   10.8000 EUR
Sale          480                  10.8284 EUR
Sale          1,858                10.8084 EUR
Sale          744                  10.8084 EUR
Sale          15                   10.8184 EUR
Sale          2,255                10.8184 EUR
Sale          2,700                10.8184 EUR
Sale          2,636                10.8084 EUR
Sale          1,912                10.8184 EUR
Sale          2,880                10.8084 EUR
Sale          2,262                10.8184 EUR
Sale          7,034                10.8084 EUR
Sale          3,564                10.8284 EUR
Sale          4,711                10.8084 EUR
Sale          6,028                10.8084 EUR
Sale          500                  10.8184 EUR
Sale          5,348                10.8184 EUR
Sale          3,206                10.8084 EUR
Sale          100                  10.8284 EUR
Sale          2,727                10.8084 EUR
Sale          602                  Transfer


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          19807         10.7675
CFD            Long          26749         10.8139
CFD            Long          245650        10.8371
CFD            Long          13497         10.8805
CFD            Long          8220          11.0142
CFD            Short         193463        10.7924
CFD            Short         9700          10.7939
CFD            Short         9200          10.7952
CFD            Short         13300         10.7968
CFD            Short         17054         11.0086
CFD            Short         8220          11.0249
CFD            Short         15525         11.0578
CFD            Short         2439          11.0623


(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)                 YES


Date of disclosure                         17 July 2008
Contact name                               Geoff Smith
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)

SUPPLEMENTAL FORM 8

DETAILS OF OPEN POSITIONS
(This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate)

OPEN POSITIONS (Note 1)
Product name,     Written or  Number of securities   Exercise price   Type, e.g.     Expiry date
e.g. call option  purchased   to which the option    (Note 2)         American,
                              or derivative relates                   European etc.
Option            Purchased   -500,000               14.0000          EURO 18/12/2009
Option            Purchased   -55,000                12.0000          EURO 19/12/2008
Option            Purchased   -1,000,000             12.0000          AMER 19/12/2008
Option            Purchased   -1,000,000             12.0000          AMER 19/12/2008
Option            Purchased   -1,000,000             15.0000          EURO 17/12/2010
Option            Purchased   -750,000               14.0000          AMER 18/12/2009
Option            Purchased   -750,000               14.0000          AMER 18/12/2009
Option            Purchased   -1,000,000             15.0000          EURO 19/06/2009
Option            Purchased   -500,000               14.0000          EURO 18/12/2009
Option            Purchased   -1,000,000             14.0000          AMER 19/12/2008
Option            Purchased   -500,000               12.0000          AMER 19/12/2008
Option            Purchased   -500,000               12.0000          AMER 19/12/2008
Option            Purchased   -500,000               12.0000          AMER 19/12/2008
Option            Purchased   -500,000               12.0000          AMER 19/12/2008
Option            Purchased   -410,000               11.9238          EURO 29/09/2008
Option            Purchased   -304,461               9.1900           EURO 19/12/2008
Option            Purchased   -500,000               14.0000          EURO 18/12/2009
Option            Purchased   1,000                  11.0000          EURO 19/09/2008
Option            Purchased   -20,000                12.0000          EURO 18/12/2009
Option            Purchased   -5,000                 14.0000          EURO 19/09/2008
Option            Purchased   -5,000                 12.0000          EURO 19/06/2009
Option            Purchased   -5,000                 12.0000          EURO 19/06/2009
Option            Purchased   -5,000                 9.5000           EURO 19/12/2008
Option            Purchased   -5,000                 15.0000          EURO 19/09/2008
Option            Purchased   -1,000,000             14.0000          EURO 19/12/2008
Option            Purchased   -2,500                 14.0000          EURO 19/12/2008
Option            Purchased   -250,000               12.5000          AMER 18/12/2009
Option            Purchased   5,000                  14.0000          EURO 19/09/2008
Option            Purchased   20,000                 12.0000          EURO 18/12/2009
Option            Purchased   55,000                 12.0000          EURO 19/12/2008
Option            Purchased   120,000                10.5000          EURO 19/06/2009
Option            Purchased   -7,500,000             0.0100           EURO 19/09/2008
Option            Purchased   -2,000,000             21.0000          AMER 19/12/2008
Option            Purchased   -2,500                 12.0000          EURO 19/12/2008
Option            Purchased   500,000                10.0000          AMER 19/12/2008
Option            Purchased   215,285                9.2900           EURO 20/04/2009
Option            Purchased   410,000                10.5210          EURO 29/09/2008
Option            Purchased   500,000                16.0000          AMER 18/12/2009
Option            Purchased   500,000                16.0000          AMER 18/09/2009
Option            Purchased   500,000                14.0000          EURO 18/12/2009
Option            Purchased   500,000                14.0000          EURO 18/12/2009
Option            Purchased   -304,461               9.1900           EURO 19/12/2008
Option            Purchased   500,000                14.0000          EURO 18/12/2009
Option            Purchased   13,400                 11.2500          EURO 12/09/2008
Option            Purchased   1,000,000              15.0000          EURO 19/06/2009
Option            Purchased   1,000,000              14.0000          EURO 19/12/2008
Option            Purchased   1,000,000              15.0000          EURO 17/12/2010
Option            Purchased   7,500,000              0.0100           EURO 19/09/2008
Option            Purchased   -1,500,000             13.3500          EURO 23/07/2008
Option            Purchased   1,500,000              13.3500          EURO 23/07/2008
Option            Purchased   500,000                10.5000          AMER 19/06/2009
Option            Purchased   -135,012               14.0200          EURO 18/12/2009
Option            Purchased   10,000,000             14.5400          EURO 23/02/2010
Option            Purchased   -250,000               14.5000          AMER 19/12/2008
Option            Purchased   -250,000               14.5000          AMER 19/12/2008
Option            Purchased   -195,381               9.6300           EURO 19/12/2008
Option            Purchased   -195,381               9.6300           EURO 19/12/2008
Option            Purchased   -192,806               9.9600           EURO 19/12/2008
Option            Purchased   88,000                 12.7000          EURO 07/08/2008
Option            Purchased   -135,012               14.0200          EURO 18/12/2009
Option            Purchased   19,900                 13.0400          EURO 03/10/2008
Option            Purchased   -114,995               10.0100          EURO 19/12/2008
Option            Purchased   -114,995               10.0100          EURO 19/12/2008
Option            Purchased   -88,000                14.4770          EURO 07/08/2008
Option            Purchased   -62,159                8.7900           EURO 19/12/2008
Option            Purchased   -62,159                8.7900           EURO 19/12/2008
Option            Purchased   -13,400                12.7500          EURO 12/09/2008
Option            Purchased   -250,000               12.5000          AMER 18/12/2009
Option            Purchased   -192,806               9.9600           EURO 19/12/2008

Notes

1. Where there are open option positions or open derivative positions (except for CFDs), full details should be given.
Full details of any  existing agreements to purchase or to sell  should also be given on this form.

2. For all prices and other monetary amounts, the currency must be stated.

For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover
Panel's website at www.thetakeoverpanel.org.uk