Change of Accounting Reference Date

Kleenair Systems International plc ("Kleenair" or the "Company")

                       Change of Accounting Reference Date

21 February 2007

The  Company hereby announces that it has changed its accounting reference  date
from  31  December to 30 September. The next final results to be announced  will
cover the 9 months ending 30 September 2006 and will be released on or before 31
March 2007.

For further information please contact:

Beth Mason                         07812 042747
[e-mail]

Nick Harriss                       020 7512 0191
ARM Corporate Finance Ltd