Holding(s) in Company

Radstone Technology PLC
27 October 2006

The Company received the following notification on Friday 27 October 2006





                                                  Barclays Corporate Secretariat
                                                               1 Churchill Place
                                                                          London
                                                                         E14 5HP
                                                              Tel: [phone]


25th October 2006

The Company Secretary
Radstone Technology PLC
Tove Valley Business Park
Towcester
Northamptonshire
NN12 6JN


Dear Sir

Companies Act 1985 ("The Act") - Part VI

I hereby inform you that as at 24 October 2006 Barclays PLC, through the legal
entities listed on the attached schedule, has a notifiable interest in the
capital of your Company of 3.12%

Details of this interest, together with a breakdown between registered holders
(as required by Section 202(3) of the Act), are enclosed.

The issued capital of 30,339,640 is the latest figure available to us. If this
is incorrect please let me know.

If you have any queries relating to this letter please contact me on 020 7116
2913.

Yours faithfully


Geoff Smith




                              Legal Entity Report



Radstone Tech.                Sedol: 0720483



As at 24 October 2006 Barclays PLC, through the legal entities listed below, had
a notifiable interest in 946,249 ORD GBP0.125 representing 3.12% of the issued
share capital of 30,339,640 units.



Legal Entity                                        Holding  Percentage Held

Gerrard Ltd                                          5,191          0.0171

Barclays Capital Securities Ltd.                   941,058          3.1017

                              Group Holding        946,249          3.1188




                           REGISTERED HOLDERS REPORT



Radstone Tech.                Sedol: 0720483



As at 24 October 2006 Barclays PLC, through the registered holders listed below,
had a notifiable interest in 946,249 ORD GBP0.125 representing 3.12% of the
issued share capital of 30,339,640 units.



Registered Holder                    Account Designation      Holding



Barclays Capital Nominees Limited                             941,058

R C Greig Nominees Limited                                      1,153

R C Greig Nominees Limited                                      4,038

                TOTAL                                         946,249






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