Timelines are extremely varied at the moment, especially at CHC London.
As an example, our application was received by CIO on 30 August 2010 and we got medicals on 13 April 2011.
Some good friends of ours who also applied through London had their application received by CIO just 1 week later on 7 September 2010, yet they have only now just got their medical requests, 7.5 months after us!
And this is both within the same set of Ministerial Instructions.
It seems a complete lottery as to when people will go in process, get medicals etc. Despite CHC London's insistance that applications are being processed in the strict order in which they arrive within the priority channels, this is clearly not happening.
So for pre-Feb-2008 applicants the timelines and lottery is even wider.