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               24 September 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     277,899,739     4.44%      3,006,699     0.05%
securities
(2) Derivatives   44,612,648     0.71%     62,730,731     1.00%
(other than
options)
(3) Options and   21,467,685     0.34%     17,787,128     0.28%
agreements to
purchase/sell
Total            343,980,072     5.50%     83,524,558     1.34%


(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          Price per unit
                    Securities
Purchase            5,345              10.5100 EUR
Purchase            2,855              10.5400 EUR
Purchase            470                10.5200 EUR
Purchase            700                10.5300 EUR
Purchase            13,161             10.5100 EUR
Purchase            459                10.5699 EUR
Purchase            11,499             10.5400 EUR
Purchase            43,801             10.5583 EUR
Purchase            3,500              10.6700 EUR
Purchase            400                10.5600 EUR
Purchase            1,000              10.5400 EUR
Purchase            96,090             10.5400 EUR
Purchase            59,048             10.5400 EUR
Purchase            4,243              10.6700 EUR
Purchase            1,223              10.6700 EUR
Purchase            459                10.5699 EUR
Purchase            9,300              10.5100 EUR
Purchase            100,000            10.5424 EUR
Purchase            1,639              Transfer
Purchase            2,780              10.5500 EUR
Purchase            7,500              10.5400 EUR
Purchase            5,000              10.5800 EUR
Purchase            4,600              10.5100 EUR
Purchase            1,500              10.5800 EUR
Purchase            1,500              10.6100 EUR
Purchase            1,200              10.6000 EUR
Purchase            400                10.5500 EUR
Sale                19,096             10.5400 EUR
Sale                4,535              10.5580 EUR
Sale                13,381             10.5140 EUR
Sale                28,253             10.5539 EUR
Sale                101,304            10.5400 EUR
Sale                1,578              10.5140 EUR
Sale                8                  8.1500
Sale                5,345              10.5100 EUR
Sale                500                10.5600 EUR
Sale                110                10.5700 EUR
Sale                16,386             10.5539 EUR
Sale                1,078              10.5509 EUR
Sale                26,838             10.5580 EUR
Sale                1,200              10.5500 EUR
Sale                720,000            10.5589 EUR
Sale                2,640              10.5376 EUR
Sale                49,641             10.5439 EUR
Sale                66,741             10.5439 EUR
Sale                1,428              10.5400 EUR
Sale                71,277             10.5580 EUR
Sale                15,458             10.5580 EUR
Sale                38,998             10.5439 EUR
Sale                75,453             10.5580 EUR
Sale                101,692            10.5439 EUR
Sale                33,229             10.5439 EUR
Sale                52,790             10.5439 EUR
Sale                63,369             10.5439 EUR
Sale                27,942             10.5439 EUR
Sale                2,965              10.5580 EUR
Sale                62,392             10.5439 EUR
Sale                14,809             10.5580 EUR
Sale                20,822             10.5580 EUR
Sale                9,935              10.5580 EUR
Sale                9,736              10.5439 EUR
Sale                18,887             10.5439 EUR
Sale                7,314              10.5439 EUR
Sale                8,049              10.5580 EUR
Sale                2,905              10.5400 EUR
Sale                40,214             10.5580 EUR
Sale                5,997              10.5439 EUR
Sale                46,925             10.5580 EUR
Sale                157,125            10.5439 EUR
Sale                35,231             10.5580 EUR
Sale                38,206             10.5580 EUR
Sale                30,461             10.5439 EUR
Sale                4,706              10.5580 EUR
Sale                25,772             10.5400 EUR
Sale                11,499             10.5400 EUR
Sale                31,696             10.5555 EUR
Sale                26,685             10.5400 EUR

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         72583         10.5523

(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)
Put             Selling           15000              11        EURO         18/12/2009     1.87

(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                         25 September 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   1,000,000              12.0000          EURO           18/12/2009
Option            Purchased   -1,500,000             10.0000          EURO           19/12/2008
Option            Purchased   500,000                10.5000          AMER           19/12/2008
Option            Purchased   500,000                12.0000          AMER           19/12/2008
Option            Purchased   500,000                14.0000          EURO           18/12/2009
Option            Purchased   500,000                16.0000          AMER           18/12/2009
Option            Purchased   410,000                10.5210          EURO           29/09/2008
Option            Purchased   600,000                12.5000          AMER           19/12/2008
Option            Purchased   260,000                9.7500           EURO           19/12/2008
Option            Purchased   1,000,000              12.0000          EURO           18/12/2009
Option            Purchased   1,000,000              14.0000          EURO           19/12/2008
Option            Purchased   1,000,000              15.0000          EURO           19/06/2009
Option            Purchased   1,000,000              15.0000          EURO           17/12/2010
Option            Purchased   1,500,000              10.0000          EURO           19/12/2008
Option            Purchased   20,000                 12.0000          EURO           18/12/2009
Option            Purchased   500,000                16.0000          AMER           18/09/2009
Option            Purchased   -5,000                 12.0000          EURO           19/06/2009
Option            Purchased   55,000                 12.0000          EURO           19/12/2008
Option            Purchased   -55,000                12.0000          EURO           19/12/2008
Option            Purchased   -20,000                12.0000          EURO           18/12/2009
Option            Purchased   7,500                  12.0000          EURO           19/12/2008
Option            Purchased   10,000                 12.0000          EURO           19/12/2008
Option            Purchased   500,000                10.0000          AMER           19/12/2008
Option            Purchased   -15,000                11.0000          EURO           18/12/2009
Option            Purchased   -1,000,000             12.0000          AMER           19/12/2008
Option            Purchased   -5,000                 12.0000          EURO           19/06/2009
Option            Purchased   -5,000                 9.5000           EURO           19/12/2008
Option            Purchased   -2,500                 14.0000          EURO           19/12/2008
Option            Purchased   19,900                 13.0400          EURO           03/10/2008
Option            Purchased   215,285                9.2900           EURO           20/04/2009
Option            Purchased   250,000                10.5000          AMER           19/12/2008
Option            Purchased   120,000                10.5000          EURO           19/06/2009
Option            Purchased   -192,806               9.9600           EURO           19/12/2008
Option            Purchased   -2,000,000             21.0000          AMER           19/12/2008
Option            Purchased   -250,000               12.5000          AMER           18/12/2009
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   -260,000               10.5000          EURO           19/12/2008
Option            Purchased   -192,806               9.9600           EURO           19/12/2008
Option            Purchased   -304,461               9.1900           EURO           19/12/2008
Option            Purchased   -135,012               14.0200          EURO           18/12/2009
Option            Purchased   -135,012               14.0200          EURO           18/12/2009
Option            Purchased   -114,995               10.0100          EURO           19/12/2008
Option            Purchased   -114,995               10.0100          EURO           19/12/2008
Option            Purchased   -62,159                8.7900           EURO           19/12/2008
Option            Purchased   -62,159                8.7900           EURO           19/12/2008
Option            Purchased   -195,381               9.6300           EURO           19/12/2008
Option            Purchased   -500,000               12.0000          AMER           19/12/2008
Option            Purchased   -1,000,000             12.0000          EURO           18/12/2009
Option            Purchased   -1,000,000             12.0000          EURO           18/12/2009
Option            Purchased   -1,000,000             12.0000          AMER           19/12/2008
Option            Purchased   -1,000,000             14.0000          EURO           19/12/2008
Option            Purchased   -1,000,000             14.0000          AMER           19/12/2008
Option            Purchased   -250,000               12.5000          AMER           18/12/2009
Option            Purchased   -1,000,000             15.0000          EURO           17/12/2010
Option            Purchased   10,000,000             14.5400          EURO           23/02/2010
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               14.0000          EURO           18/12/2009
Option            Purchased   -410,000               11.9238          EURO           29/09/2008
Option            Purchased   -304,461               9.1900           EURO           19/12/2008
Option            Purchased   -1,000,000             15.0000          EURO           19/06/2009

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