Below is my experience.
The appointment was on 3rd Jan 2012, 2 dependent & spouse.
I was on HSMP & Tier1 and the appointment was 14 days before completing 5 years.
The appointment was at 9:20am reached their 20 mins early.
ILR application was approved on the new SET(O) form version 12/2012
Documents submitted:
1) 12 months Bank statements
2) 12 months salary slips
3) Employer’s Letter (they kept the Original letter didn’t return)
4) Original Degree certificate (though not required)
6) Photos
7) 5 years P60’s

9) Proof of maintenance funds (though not required)
10) Cohabitation proof, council tax , NHS letters etc; Bank letters
Previous Tier1 Approval letter
Fee payment and Biometrics were done by 1100
CW called @ 1150 and as soon as they took my papers they shut the window and went for lunch break.
Case approved @ 1415
BRP received today
Overall pretty smooth going and not a bad experience.
Happy to provide any further information
BR