ANA classes on Virgin Atlantic Codeshare

Hey folks,
Long time no post. I'm once again planning on jaunting, this time to Japan. I noticed today while looking at flights that the ANA codeshare in now in operation (woo hoo) and there's a later flight, a night flight with ANA which I'm very tempted to take.
I'm planning on a Z ticket in UC but I was wondering, if you're on the ANA flight do you end up in First Class or Business on an Upper Class ticket? I'm hoping it's the former. Has anyone else flow codeshare with ANA at all?
Ta in advance!
Lesley
Long time no post. I'm once again planning on jaunting, this time to Japan. I noticed today while looking at flights that the ANA codeshare in now in operation (woo hoo) and there's a later flight, a night flight with ANA which I'm very tempted to take.
I'm planning on a Z ticket in UC but I was wondering, if you're on the ANA flight do you end up in First Class or Business on an Upper Class ticket? I'm hoping it's the former. Has anyone else flow codeshare with ANA at all?
Ta in advance!
Lesley