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               19 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     294,769,621     4.71%      3,184,561     0.05%
securities
(2) Derivatives   45,761,853     0.73%     67,537,731     1.08%
(other than
options)
(3) Options and   20,867,685     0.33%     17,772,128     0.28%
agreements to
purchase/sell
Total            361,399,159     5.78%     88,494,420     1.41%


(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                 34,396                  11.24 EUR
Purchase                 12,152                  9.99 EUR
Purchase                 300,000                 10.7327 EUR
Purchase                 400                     11.16 EUR
Purchase                 1,596                   Transfer
Purchase                 33                      11.25 EUR
Purchase                 375                     11.03 EUR
Purchase                 3,200                   11.25 EUR
Purchase                 270                     10.61 EUR
Purchase                 6,197                   11.25 EUR
Purchase                 30,620                  11.5732 EUR
Purchase                 3,500                   10.02 EUR
Purchase                 1,675                   10.81 EUR
Purchase                 75                      11.24 EUR
Purchase                 6                       11.24 EUR
Purchase                 78,723                  11.24 EUR
Purchase                 3,629                   11.24 EUR
Purchase                 44,102                  11.24 EUR
Purchase                 3,894                   11.24 EUR
Purchase                 7,248                   11.24 EUR
Purchase                 923                     11.24 EUR
Purchase                 3,830                   11.24 EUR
Purchase                 1,283,000               10.9967 EUR
Purchase                 10,420                  11.0917 EUR
Purchase                 13,400                  11.24 EUR
Purchase                 10,419                  10.7335 EUR
Purchase                 7,500,000               11.25 EUR
Purchase                 1,335                   11.24 EUR
Purchase                 500,000                 9.95 EUR
Purchase                 10                      11.05 EUR
Purchase                 24,010                  10.8433 EUR
Purchase                 297                     11.02 EUR
Purchase                 119,505                 11.2406 EUR
Purchase                 3,000                   11.25 EUR
Purchase                 1,000                   11.25 EUR
Purchase                 722                     11.24 EUR
Purchase                 500                     11.05 EUR
Purchase                 508,500                 11.24 EUR
Purchase                 200                     10.75 EUR
Purchase                 9,174                   10.9267 EUR
Purchase                 1,000                   11.25 EUR
Purchase                 1,596                   Transfer
Purchase                 3,900                   9.99 EUR
Purchase                 2,558                   11.24 EUR
Purchase                 700                     11.42 EUR
Purchase                 132,445                 10.6848 EUR
Purchase                 1,015                   11.0077 EUR
Purchase                 4,087                   11.0054 EUR
Purchase                 5,790                   11.0055 EUR
Purchase                 41,219                  11.24 EUR
Purchase                 1,750                   11.007 EUR
Purchase                 5,898                   11.24 EUR
Purchase                 1,025                   11.0077 EUR
Purchase                 5,716                   11.24 EUR
Purchase                 5,866                   11.24 EUR
Purchase                 436                     11.0093 EUR
Purchase                 670                     11.24 EUR
Purchase                 6,792                   11.24 EUR
Purchase                 1,002                   11.24 EUR
Purchase                 2,350                   11.0064 EUR
Purchase                 71,970                  11.24 EUR
Purchase                 5,121                   11.0054 EUR
Purchase                 35,985                  11.24 EUR
Purchase                 42,768                  11.24 EUR
Purchase                 3,783                   11.0055 EUR
Purchase                 2,461                   11.0059 EUR
Purchase                 1,000                   11.24 EUR
Purchase                 6,970                   11.0056 EUR
Sale                     32,261                  11.2308 EUR
Sale                     1,200                   11.11 EUR
Sale                     1,328                   11.2366 EUR
Sale                     11,067                  11.24 EUR
Sale                     70                      11.02 EUR
Sale                     411,116                 11.1239 EUR
Sale                     500                     11.24 EUR
Sale                     200                     11.16 EUR
Sale                     126                     Transfer
Sale                     2,428                   11.4 EUR
Sale                     37,762                  11.24 EUR
Sale                     952                     11.13 EUR
Sale                     800                     11.35 EUR
Sale                     52,445                  11.24 EUR
Sale                     38,180                  10.34 EUR
Sale                     2,800                   10.71 EUR
Sale                     1,000                   11.14 EUR
Sale                     200                     11.2 EUR
Sale                     641,500                 10.0568 EUR
Sale                     7,970                   11.24 EUR
Sale                     500                     11.2 EUR
Sale                     250                     11.02 EUR
Sale                     1,000                   11.2 EUR
Sale                     1,335                   11.24 EUR
Sale                     600,000                 11.234 EUR
Sale                     182,432                 11.0965 EUR
Sale                     2,239                   11.2308 EUR
Sale                     225                     11.35 EUR
Sale                     3,000                   11.16 EUR
Sale                     976                     11.13 EUR
Sale                     1,000                   11.05 EUR
Sale                     250                     10.6 EUR
Sale                     11,105                  11.2308 EUR
Sale                     1,500                   10.77 EUR
Sale                     8,500                   11.14 EUR
Sale                     19,896                  11.2308 EUR
Sale                     7,500,000               11.25 EUR
Sale                     300,000                 10.7349 EUR
Sale                     2,334                   Transfer
Sale                     100                     11.49 EUR
Sale                     3,400                   9.98 EUR
Sale                     52,367                  11.0444 EUR
Sale                     1,668                   11.2308 EUR
Sale                     1,829                   11.2308 EUR
Sale                     8,035                   11.2308 EUR
Sale                     500                     10.93 EUR
Sale                     600                     10.74 EUR
Sale                     12,489                  11.24 EUR
Sale                     16,143                  11.2308 EUR
Sale                     239,689                 11.1497 EUR
Sale                     44,594                  11.0831 EUR
Sale                     871,884                 10.9408 EUR
Sale                     32,137                  11.0831 EUR
Sale                     66,120                  11.0831 EUR
Sale                     35,629                  11.0831 EUR
Sale                     198,792                 11.24 EUR
Sale                     51,640                  11.0831 EUR
Sale                     27,293                  11.0832 EUR
Sale                     11,866                  11.1675 EUR
Sale                     24,134                  11.0832 EUR
Sale                     14,441                  11.0833 EUR
Sale                     76,488                  11.083 EUR
Sale                     372,393                 11.083 EUR
Sale                     1,232,467               11.083 EUR
Sale                     7,236                   11.24 EUR
Sale                     21,077                  11.24 EUR
Sale                     700                     11 EUR
Sale                     35,361                  11.0831 EUR
Sale                     24,542                  10.7871 EUR
Sale                     248,975                 11.083 EUR
Sale                     12,186                  11.24 EUR
Sale                     2,572                   11.24 EUR
Sale                     7,273                   11.2308 EUR
Sale                     88,708                  11.0829 EUR
Sale                     66,952                  11.0831 EUR
Sale                     21,070                  10.7871 EUR
Sale                     41,378                  11.0831 EUR
Sale                     13,453                  10.7871 EUR
Sale                     7,272                   11.0835 EUR
Sale                     6,641                   11.0835 EUR
Sale                     11,225                  11.0834 EUR
Sale                     68,025                  11.083 EUR
Sale                     118,215                 11.083 EUR
Sale                     135,546                 11.083 EUR
Sale                     1,227                   11.24 EUR
Sale                     155,201                 11.083 EUR
Sale                     580                     11.08 EUR
Sale                     2,950                   11.23 EUR
Sale                     712                     10.7 EUR
Sale                     300                     11.28 EUR
Sale                     4,488                   11.2308 EUR
Sale                     3,000                   10.8 EUR
Sale                     500                     11.1 EUR
Sale                     151,843                 10.9997 EUR
Sale                     12,152                  9.99 EUR
Sale                     250,000                 11.1073 EUR
Sale                     11,240                  11.24 EUR
Sale                     500                     10.93 EUR
Sale                     500,000                 9.95 EUR
Sale                     290                     10.66 EUR
Sale                     3,230                   11.2308 EUR
Sale                     22,591                  11.2308 EUR
Sale                     30,655                  11.2308 EUR
Sale                     11,914                  11.24 EUR
Sale                     690                     11.24 EUR
Sale                     7,438                   11.24 EUR
Sale                     270                     11.13 EUR
Sale                     67,549                  11.2308 EUR
Sale                     8,693                   11.23 EUR
Sale                     400                     11.18 EUR
Sale                     500,000                 11.2692 EUR
Sale                     4,005                   11.24 EUR
Sale                     3,414                   11.24 EUR
Sale                     1,000                   11 EUR
Sale                     75,000                  10.7177 EUR
Sale                     328,859                 9.9501 EUR


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          52367         11.0443
CFD            Long          182432        11.0965
CFD            Short         15718         10.7248
CFD            Short         20180         11.1094
CFD            Short         6668          11.24
CFD            Short         700           11.42

(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                         22 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          AMER           19/12/2008
Option            Purchased   -55,000                12.0000          EURO           19/12/2008
Option            Purchased   -304,461               9.1900           EURO           19/12/2008
Option            Purchased   -304,461               9.1900           EURO           19/12/2008
Option            Purchased   -410,000               11.9238          EURO           29/09/2008
Option            Purchased   -500,000               14.0000          EURO           18/12/2009
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   -1,000,000             15.0000          EURO           17/12/2010
Option            Purchased   -1,000,000             15.0000          EURO           19/06/2009
Option            Purchased   -1,000,000             14.0000          AMER           19/12/2008
Option            Purchased   -1,000,000             14.0000          EURO           19/12/2008
Option            Purchased   -250,000               12.5000          AMER           18/12/2009
Option            Purchased   20,000                 12.0000          EURO           18/12/2009
Option            Purchased   -20,000                12.0000          EURO           18/12/2009
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   -2,500                 14.0000          EURO           19/12/2008
Option            Purchased   -1,000,000             12.0000          EURO           18/12/2009
Option            Purchased   10,000                 12.0000          EURO           19/12/2008
Option            Purchased   -1,000,000             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   -2,000,000             21.0000          AMER           19/12/2008
Option            Purchased   -1,500,000             10.0000          EURO           19/12/2008
Option            Purchased   -1,000,000             12.0000          AMER           19/12/2008
Option            Purchased   -250,000               12.5000          AMER           18/12/2009
Option            Purchased   7,500                  12.0000          EURO           19/12/2008
Option            Purchased   215,285                9.2900           EURO           20/04/2009
Option            Purchased   1,500,000              10.0000          EURO           19/12/2008
Option            Purchased   1,000,000              15.0000          EURO           17/12/2010
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              12.0000          EURO           18/12/2009
Option            Purchased   1,000,000              12.0000          EURO           18/12/2009
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                12.0000          AMER           19/12/2008
Option            Purchased   500,000                10.5000          AMER           19/12/2008
Option            Purchased   500,000                10.0000          AMER           19/12/2008
Option            Purchased   410,000                10.5210          EURO           29/09/2008
Option            Purchased   -260,000               10.5000          EURO           19/12/2008
Option            Purchased   -135,012               14.0200          EURO           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   -195,381               9.6300           EURO           19/12/2008
Option            Purchased   -192,806               9.9600           EURO           19/12/2008
Option            Purchased   260,000                9.7500           EURO           19/12/2008
Option            Purchased   -135,012               14.0200          EURO           18/12/2009
Option            Purchased   250,000                10.5000          AMER           19/12/2008
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   19,900                 13.0400          EURO           03/10/2008
Option            Purchased   10,000,000             14.5400          EURO           23/02/2010
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