Timeline:
First UK entry: 10 Aug 2019 (as PBS dependant)
Switched in-country to Tier 2 General:
Application Submitted: 28 Aug 2020
COS Work starts date : 7 Sep 2020
Visa granted: 28 Sept 2020
Most recent grant: Skilled Worker valid to 04 Oct 2026
1. Based on the timeline above , is my earliest valid ILR submission date, considering the COVID concession, would be 10th August (28 days before COS start day) or 1st July (28 days before application submitted)
2. SOC code change
My last CoS shows SOC 2136 (Programmer/Developer). Since then, the SOC list/descriptions have changed to IT Quality Analyst.
For ILR application, should I quote the SOC from my most recent CoS (2136) or the updated SOC code that now applies to the role?
3. Home Office reference numbers in application
I can provide the references for my Tier 2 and Skilled Worker applications. I first entered as a dependant but I can't find that older reference.
Is it necessary to provide the earlier dependant reference?
4. I work 40 hours a week, but my last COS shows 35 hours per week, which one should I mention in the application?
5..I'm doing it by myself, so re-confirming, I need to apply via Set(o) application, right?

Thank you very much for any help.