Holding in Company

17 July 2008
                                                     AVATION PLC
                                            ('AVATION' OR THE 'COMPANY')

                                      NOTIFICATION OF SUBSTANTIAL SHAREHOLDING

The Board of Avation Plc has received notification on 16 July from Credit Suisse Securities (Europe) Limited that it now has an  interest in 1,583,244 shares in the Company, this interest is advised by Credit Suisse Securities (Europe) as 8.49% of the issued voting shares of the Company.

                      The directors take responsibility for the contents of this announcement.

                                                     ---ENDS---

ENQUIRES:

AVATION PLC                                                      07783 942 553
Jeff Chatfield, Chairman

STOCKBROKERS
WH Ireland Ltd                                                   020 7220 1670

Cornhill Asset Management Ltd                                    020 7743 6000

ADVISOR                                                          020 7628 1128
Jonathan Willis-Richards
Loeb Aron & Company Ltd.

MEDIA                                                            020 7562 3350
Maxine Barnes, Nick Rome
Bishopsgate Communications

WEBSITES                                                         www.avation.net

Avation plc