She will get an extension with an expiry date they same as your visa expiry date. You cannot choose less validity or a time period that suits you. Thank you. So in this case I cannot use the minimum three years clause ? instead of adding 5 more months and do you know if IHS surcharge will be for 05...

Hi I am in UK on Skilled Worker Visa, my first visa was granted in Feb 2022, I then switch employer in July 2023 and got 5 years visa till July 2028. I will be eligible for ILR in Feb 2027. Now my wife oringal 03 years visa is expiring in Feb 2025, It appears I cannot extend her visa till Feb 2027 a...

Priority service is not a guarantee unfortunately. My friend applied using PS and despite his CoS from govt department, it took 35 days to get visa approval notification.

As you now got new CoS and applied for visa extension and their visa is still valid, you don't need to do anything. Only extend it once their visas are about to expire.

You can apply 28 days before expiration.
You need valid CoS Reference number
Your BRP
Passport
Proof of English (ECIS which you used for your first application)

For Dependents
Proof of relationship
Proof of residence
You won't require maintenance fund as you are living in UK (more than 12 months)