Notifiable Interests

DAT Group PLC
28 October 2005


28 October 2005


                  DAT Group plc ('DAT Group' or 'the Company')


         Notifiable Interests of Directors and Substantial Shareholders


Following the successful placing announced yesterday, 17,666,667 new ordinary
shares in DAT Group were admitted to trading today.


Pursuant to rule 17 of the AIM Rules, the following falls to be disclosed (as
far as the directors of the Company are aware as at 27 October 2005):

Name of Shareholder                             Shareholding         Percentage

Smith & Williamson IM                              4,711,423             12.96%
Reabourne                                          3,200,000              8.80%
Fidelity                                           2,994,600              8.24%
GAM UK Equity Hedge Inv Inc                        2,278,325              6.27%
David Hayes                                        1,714,561              4.72%
Framlington                                        1,616,000              4.44%
MAN Financial Limited                              1,528,100              4.20%
Timothy Carmichael                                 1,385,321              3.81%
JO Hambro Capital Management Ltd                   1,382,000              3.80%



Name of Director                                Shareholding         Percentage

John Gunn                                            835,330              2.30%
Terry Page                                           166,377              0.46%
Allan Jonnes                                          25,000              0.07%


For more information please visit www.datgroup.com or contact:

Allan Jonnes, CFO                         Nicole Meissner, CMO
DAT Group plc                             DAT Group plc
Office: [phone]                  Office: [phone]
                                          Mobile: [phone]
Simon Hudson / Clemmie Carr
Tavistock Communications
Tel: [phone]


Notes to Editors


About DAT Group plc


DAT Group plc focuses on mobile management solutions for operators, device
manufacturers, retailers and enterprises. The company offers a varied product
portfolio ranging from data synchronization (DS) to device management (DM),
firmware updates over-the-air (FOTA) and mobile device management (Enterprise
Assistant). DAT has unique expertise in smart devices across all platforms based
on its market-leading over-the-air (OTA) delivery platform. Based in the UK, the
company also has offices in Germany and the U.S. DAT is a public company listed
on the London Stock Exchange. More information about DAT is available at
www.datgroup.com


About Synchronica


Synchronica focuses on SyncML synchronization and device management solutions
for mobile operators, device manufacturers, and enterprises. The company offers
a complete SyncML product portfolio ranging from data synchronization (DS) to
device management (DM) and firmware update over-the-air (FOTA). Synchronica has
a strong track record in the SyncML space, including the launch of the world's
first SyncML DM FOTA server with a leading European device manufacturer. The
Synchronica SyncML Gateway provides over-the-air synchronization of
SyncML-enabled mobile phones with corporate Microsoft Exchange servers. More
information is available at www.synchronica.com


                      This information is provided by RNS
            The company news service from the London Stock Exchange