Have noticed that G-VKSS flying from LGW does not show as having any UC seating, is this the only Virgin A330 plane to have this configuration of seating or are any of the other A330s in the fleet to have it.
All the A330s have UC cabins.
Initially the first 2 A330s that were delivered didn't have UC but it was then retrofitted at a later date (but that was a couple of years ago)
Is it possible you are looking at a very old seat map diagram.