Holding(s) in Company

Radstone Technology PLC
21 June 2004


The company has received the following announcement:

                                                 Fidelity Investments
                                                 Mail: One Federal Street E14B
                                                 Boston, MA 02109-3614
                                                 Office: 82 Devonshire Street
                                                 Boston, MA02109

                                                 June 17, 2004

Radstone Technology Plc
Water Lane
Towcester
Northamptonshire, NN12 6JN
United Kingdom

Fax: [phone]

ATTN: Company Secretary


Dear Sirs,

            Enclosed are amended notifications of disclosable interests under
the U.K. Companies Act 1985.  Please note that while this information details
the disclosable interest of more than one entity, the enclosed disclosure
constitutes separate notifications of interest which have been combined solely
for purposes of clarity and efficiency.  It is not intended to indicate that any
of these entities act as a group or in concert with respect to these interests.

            These disclosures are made in the interest of conformity with the
Companies Act.  The Interest detailed herein were acquired solely for investment
purposes.  For disclosure purposes, holdings should be represented as FMR Corp.
and its direct and indirect subsidiaries, and Fidelity International Limited
(FIL) and its direct and indirect subsidiaries, both being non-beneficial
holders.

If you have any questions please contact Julie Finocchio at [phone] or by
Fax at [phone].


Kindest regards

Julie Finocchio
Compliance Specialist




Amendment #4

NOTIFICATIONS UNDER SECTION1 98 TO 202 - U.K. COMPANIES ACT

1.   Company in which shares are held:        Radstone Technology Plc
     
2.   Notifiable Interest: Ordinary Shares

(a)  FMR Corp.
     82 Devonshire Square
     Boston, MA 02109

     Parent holding company of Fidelity Management and Research Company
(FMRCO), investment manager for US mutual funds and Fidelity Management Trust
Company (FMTC), a US state chartered bank which acts as a trustee or investment
manager of various pension and trust accounts.  (See Schedule A for listing of
Registered Shareholders and their holdings).

(b)  Fidelity International Limited (FIL)
     P.O. Box HM 670
     Hamilton HMCX, Bermuda

     Parent holding company for various direct and indirect
subsidiaries.  (See Schedule A for listing of Registered Shareholders and their
holdings.)

3.   The notifiable interests also comprise the notifiable interest of:

     Mr. Edward C Johnson 3d
     82 Devonshire Street
     Boston, MA 02109

     A principal shareholder of FMR Corp. and Fidelity International Limited
     
4.   The notifiable interests include interest held on behalf of
authorized unit trust schemes in the U.K., notwithstanding the exemption from
reporting pursuant to Section 209 (1)(h) of the Companies Act 1985.

5.   These notifications of disclosable interests constitute separate
notifications of interest in the shares and are combined solely for the purposes
of clarify and efficiency.  Nothing herein should be taken to indicate that FMR
Corp. and its direct and indirect subsidiaries, Fidelity International Limited
and its direct and indirect subsidiaries or Mr. Edward C. Johnson 3d act as a
group or in concert in respect of the disclosed interests, or that they are
required to submit these notifications on a joint basis.

6.   The disclosable interests arise under section 208(4)(b) of the Act,
namely where a person, not being the registered holder, is entitled to exercise
a right conferred by the holding of the shares or to control the exercise of
such rights, or under section 203 of the Act respectively.



                                      By Eric D Roiter
                                      Senior V.P. & General Counsel - FMR Co.
                                      Duly authorised under Powers of Attorney
                                      Dated December 30, 1997, by and on behalf
                                      of FMR Corp. and its direct and indirect
                                      subsidiaries, and Fidelity International
                                      Limited and its direct and indirect
                                      subsidiaries


Schedule A                                                          Amendment #4
Security: Radstone Technology Plc

Ordinary Shares         Shares Held    Management    Nominee/Registered Name
                                        Company

                            225,000      FMRCO       HSBC
                            150,000       FMTC       Nortrust Nominees
                            712,221       FIL        HSBC
                            372,300       FIL        Chase Manhattan Bank London
                             13,500       FIL        State Street Bank & Trust
                             29,186       FIL        Bank of New York London
                             59,617       FIL        Bankers Trust
                             81,124       FIL        Citibank



Total ordinary shares               1,642,948

Current ownership                       5.88%
percentage:

Shares in issue:                   27,932,860

Change in holdings                   (62,700)
since last filing:            ordinary shares




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