Director/PDMR Shareholding

Tristel PLC
05 November 2007


                    Tristel plc ('Tristel' or the 'Company')

                               Directors' Dealing

Tristel announces that Mr Paul Swinney, Chief Executive, and Mr Francisco Soler,
Non-Executive Chairman, have today  disposed of 700,000 and 1,000,000 ordinary
shares of 1p each ('Shares') respectively at 49p per share in the Company in 
order to satisfy institutional demand.  Separately, Mr Swinney has also today
transferred 272,727 Shares at 55p per   share to Peter Stephens, Non-Executive
Director, as repayment of a personal loan made in August 2005 to settle certain 
tax and  national insurance liabilities arising from his exercise of 2,265,475
options upon the Company's admission to  AIM on 1st June 2005.

Following the sale and transfer Mr Swinney and Mr Stephens are beneficially
interested in a total of 1,522,242 and  1,060,681 Shares in Tristel representing
6.23 and 4.34 per cent. of the issued share capital of the Company 
respectively.

Mr Soler and his family interests through their related vehicles are as follows:

                                     Prior to sale  Amount of    Current        %
                                     of Shares      Shares sold  shareholding 

Windsor International Corporation    3,450,892      400,000      3,050,892      12.48
World Financial Trading Corp         3,450,892      400,000      3,050,892      12.48
Atlas World Carriers SA              1,725,444      200,000      1,525,444       6.24

Enquiries:

Tristel plc                                    Tel: [phone]
Paul Swinney
Chief Executive

Daniel Stewart & Company Plc                   Tel: [phone]
Graham Webster

Parkgreen Communications Limited               Tel: [phone]
Paul McManus


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