Rule 8.3 - BAA 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              BAA PLC
Class of relevant security    ORD GBP 1.00
to which the dealings being
disclosed relate (Note 2)
Date of dealing               17 FEBRUARY 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              39,691,857    (3.69%)    2,270,935     (0.21%)
securities
(2) Derivatives              776,610    (0.07%)      601,822     (0.06%)
(other than options)
(3) Options and              850,000    (0.08%)      850,000     (0.08%)
agreements to
purchase/sell

Total                     41,318,467    (3.84%)    3,722,757     (0.35%)


(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:

2.625%                 Number       (%)            Number       (%)
Convertible
bonds 19/08/2009

(1) Relevant               8,843,000   (2.08%)             0    (0.00%)
securities
(2) Derivatives                    0   (0.00%)             0    (0.00%)
(other than
options)
(3) Options and                    0   (0.00%)             0    (0.00%)
agreements to
purchase/sell

Total                      8,843,000   (2.08%)             0    (0.00%)



Class of                          Long                        Short
relevant
security:

2.94%Convertible              Number       (%)            Number    (%)
bonds 04/04/2008

(1) Relevant                  20,000   (0.00%)             0    (0.00%)
securities
(2) Derivatives                    0   (0.00%)             0    (0.00%)
(other than
options)
(3) Options and                    0   (0.00%)             0    (0.00%)
agreements to
purchase/sell

Total                         20,000   (0.00%)             0    (0.00%)


(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      454                  Transfer
Purchase      2                    Transfer
Purchase      50,000               8.1900
Purchase      26,217               8.2200
Purchase      1,558                8.2550
Purchase      5,974                8.2188
Sale          74                   8.2264
Sale          91                   8.2264
Sale          500                  8.2364
Sale          1,160                8.2290
Sale          930                  8.2290
Sale          5,140                8.2290
Sale          21,000               8.2400
Sale          7,776                8.2200
Sale          245,230              8.2267
Sale          1,201                8.2522
Sale          26,217               8.2200
Sale          38,291               8.2311
Sale          26,217               8.2200


(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        Long          38,291                8.2311
CFD        Long          26,217                8.2200
CFD        Long          245,230               8.2267
CFD        Long          33,318                8.2417


(c)  Options transactions in respect of existing securities

(i)  Writing, selling, purchasing or varying

Transactions carried out on 17/02/2006

Product   Writing,    Number of      Exercise  Type,      Expiry  Option
name,     selling,    securities     Price     e.g.       date    money
e.g. call purchasing, to which       (USD)     American,          paid/received
option    varying     the option               European           per unit (GBP)
          etc.        relates                  etc.
                      (Note 7)
Call      Purchasing  Long 350,000   8.5000    American   03/06   26.5000
Call      Purchasing  Short 350,000  8.5000    American   06/06   42.000


Transactions carried out on 16/02/2006

Product   Writing,    Number of      Exercise  Type,      Expiry  Option
name,     selling,    securities     Price     e.g.       date    money
e.g. call purchasing, to which       (USD)     American,          paid/received
option    varying     the option               European           per unit (GBP)
          etc.        relates                  etc.
                      (Note 7)
Call      Purchasing  Long 500,000   8.5000    American   03/06   22.0000
Call      Purchasing  Short 500,000  8.5000    American   06/06   36.0000


(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                         20 FEBRUARY 2006
Contact name                               BARCLAYS CORPORATE SECRETARIAT
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