home office appeal after wife is in the UK

[Wakizashi21]

The home office have decided to appeal after granting my appeal in november. My wife is already in the UK and has been given a 2yr spouse visa.

I believe the home office hhave 5 days to appeal when the allowed? (But they have already given my wife the visa and she is currently living with me)

They have appealed to Upper Tribunal. I dont understand why they would have done this? Is this possible with the current law?

Wife came to the UK on April 17th.

[vinny]

See also Level playing field for extensions of time.

[Obie]

Leaving aside the merit of their appeal, and the helpful link that Vinny kindly provided, it is difficult to see how the UKBA can appeal against that decision and how the tribunal can have jurisdiction to entertain it in the light of Section 104(4a) of the NIA acts 2002.