The State Letter from ICAO notifying the standard was issued on 24 March 2005 giving 7 months notice .. and yet it takes over 1 year 2 months to implement in the UK ??
When was the working group set up ?
I'm impressed that we have embraced the slow turning European beaurocracy so well
PS the principles have been agreed since 2003 by the European Air Navigation Planning Group (of which the UK is a member), so it could hardly come as a surprise that the change would happen after due ICAO process was followed.