English requirements- for BC

Hi all and thanks for answering my previous queries.

My missus is applying for BC however kind of confused with regards to English requirements. To add some context she came to the UK on Tier 2 shortage occupation visa & as part of that visa met the english criteria by way of IELTS UKVI (Academic) in 2018.

Fast forward 2023, she also got her ILR, now certain questions on the BC application are a bit confusing.

As some of her friends went through Ecctis/Naric for equivalence letter and some gave B1 English test despite a valid IELTS certificate, just to be on the safer side.

In short does she have to sit for another English test, or will her UKVI IELTS 2018 suffice?

Many thanks

That should suffice - she needs to indicate that she used it for a past immigration application, submit the certificate/URN and explain in a cover note when she submitted it.