Certificate of sponsorship

Will I need a new CoS if my department is making me a Senior clinical fellow from a junior clinical fellow?
My job remains the same. The only thing changing is my grade and there might be a salary rise. I have a permanent contract with the trust.emphasized text

Can you be on a permanent contract whilst your require a visa to stay in the country? How long your BRP was valid for in your initial contract?

If you are not changing your employer then generally it’s not needed to get a new CoS for your promotion.