Holding(s) in Company

Carillion PLC
03 April 2007



TR-1(i): notification of major interests in shares
                                                        --------------------
1. Identity of the issuer or the underlying               Carillion PLC
issuer of existing shares to which voting rights        --------------------
are attached(1):
-------------------------------
2. Reason for the notification (please tick the appropriate box or
boxes)                                                                      -------
--------------------------------------------
An acquisition or disposal of voting rights
--------------------------------------------                              -------
An acquisition or disposal of financial instruments which may result in
the acquisition of shares already issued to which voting rights are       -------
attached
--------------------------------------------
An event changing the breakdown of voting rights
--------------------------------------------                              -------
Other (please specify): Initial notification under Transparency
Directive                                                                 -------
--------------------------------------------
3. Full name of person(s) subject to the                     HBOS plc
notification obligation(1):                             --------------------
-------------------------------
4. Full name of shareholder(s) (if different              See Section 9.
from 3.)(1):                                            --------------------
-------------------------------
5. Date of the transaction (and date on which                  N/A
the threshold is crossed or reached if                  --------------------
different)(1):
-------------------------------
6. Date on which issuer notified:                         19 March 2007
-------------------------------                         --------------------
7. Threshold(s) that is/are crossed or reached:                             6.129%
-------------------------------                                --------------------
8. Notified details:
-------------------------------                              --------------------



A: Voting rights attached to shares
Class/type of  Situation       Resulting situation after the triggering transaction(1)
shares         previous to the
               Triggering
               transaction (1)

if possible
using the ISIN Number   Number Number of   Number of voting rights  % of voting
CODE           of       of     shares      ix                       rights
               Shares   Voting
                        Rights Direct      Direct x    Indirect     Direct   Indirect
                        viii                           xi

Ord 50p Shares n/a      n/a    6,611,212   6,611,212   10,626,631    2.531%     3.778%
ISIN
GB0007365546

B: Financial Instruments
Resulting situation after the triggering transaction xii
Type of      Expiration Exercise/      Number of voting rights that may % of
financial    date       Conversion     be acquired if the instrument is voting
instrument   xiii       Period/ Date   exercised/ converted.            rights
                        xiv
N/A

Total (A+B)
Number of voting rights                      % of voting rights
                                17,237,843                               6.129%




9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable xv:
Insight Investment Management (Global) Limited* ('IIMGL') (indirect) -
16,606,238 (5.904%)
IIMGL manages holdings on behalf of other HBOS Group companies, and other third
parties external to the HBOS Group, under various discretionary management
agreements.
(* - wholly owned subsidiaries of HBOS plc.)

Proxy Voting:
10. Name of the proxy holder:                                             N/A
11. Number of voting rights proxy holder will cease to hold:              N/A
12. Date on which proxy holder will cease to hold voting rights:          N/A

13. Additional information:  Notification using the total voting rights figure
                             of
                                                                   281,242,738
                             First notification under DTR Sourcebook
14. Contact name:            Kenny Melville
15. Contact telephone
number:                      0131 243 8671
Annex Notification Of Major Interests In Shares xvi

Notes
--------------------------

(i) This form is to be sent to the issuer or underlying issuer and to be filed
with the competent authority.



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