Work start date with new employer

Hello,

I've applied for Tier-2 leave to remain (extension) visa through a new employer with new CoS. But the start date in CoS is 1st March 2017 whereas I received CoS on 7th Feb. There was less than a month time so I applied through priority service. But my current work place has one month notice period. I already applied for the visa and biometrics also done. Which date should be my last working day with my present employer so that not to breach immigration laws.

Thanks

Hi,
You should be able to continue working for your current employer until the start date on your COS i.e. 28th Feb 2017.
More experienced members please correct me if my understanding is wrong.

My couple of friends experienced similar situation within the last 3 years. They both tried to negotiate their notice period with their original company to match the start date of the new company (the date on the CoS). However they weren't allowed to leave earlier. They ended up asking the new company to amend the start date in the CoS via note with SMS system.