Holding(s) in Company

Safestore Holdings PLC
19 March 2007



TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES



1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached:



  Safestore Holdings PLC



2. Reason for the notification (please place an X inside the appropriate bracket
/s):



 Company listed on 9 March 2007



3. Full name of person(s) subject to the notification obligation:



 Henderson Global Investors Ltd



4. Full name of shareholder(s) (if different from 3.) :



 N/A



5. Date of the transaction (and date on which the threshold is crossed or
reached if different):



 9 March 2007



6. Date on which issuer notified:



 15 March 2007



7. Threshold(s) that is/are crossed or reached:



 4%



8. Notified details:



A: Voting rights attached to shares


Class/type of shares if possible              Situation previous to the Triggering transaction
using the ISIN CODE
                                  Number of shares                   Number of voting Rights


Ordinary 1p shares                 8,611,538                          8,611,538

GBOOB1N7Z094







Resulting situation after the triggering transaction


Class/type of shares if      Number of shares         Number of voting rights           % of voting rights
possible using the ISIN CODE
                             Direct                   Direct       Indirect             Direct      Indirect


Ordinary 1p shares           8,611,538                8,611,538                         4.60%

GBOOB1N7Z094





B: Financial Instruments

Resulting situation after the triggering transaction



N/A



Total (A+B)
Number of voting rights        % of voting rights


8,611,538                      4.60%



9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable :





Proxy Voting:



10. Name of the proxy holder:







11. Number of voting rights proxy holder will cease to hold:







12. Date on which proxy holder will cease to hold voting rights:







13. Additional information:










14. Contact name:



 Stuart Beavers



15. Contact telephone number:



 020 8732 1500



19 March 2007



END


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