I know this is a few days late, but I just wanna flag this up to you for future reference, about the Cambridge Vue. (I live in Cambridge)
Due to the low attendance that Vue Cambridge gets, they recently upgraded all their seats to huge leather VIP recliners with tons of space, as a result their number of seats in each screen decreased by ~70%. Vast majority of shows, for every single film, sell out as a result of only having 40 seats in each screen.
I don't know how many other sites Vue has done this to, but a sellout at Vue Cambridge means nothing since they got rid of most of their seats.
Their screen plans now look like this:
6 of their 8 screens have exactly that layout, each with 40 seats. The other two screens are bigger but still have a very small number of seats compared to most big screens. (96 and 127 seats, respectively)
Needless to say, they have tons and tons of sellouts. I remember trying to book a ticket for In the Heart of the Sea two weeks after release, and every show was sold out. lol
The business strategy was basically to take huge losses on major, popular films, while making smaller films, and late shows, more popular. I really doubt it makes them an increased profit but it is a strategy Vue is experimenting with at one of its lowest-performing (therefore lowest-risk) sites. So when you see two dozen sellouts at that site, take it with a pinch of salt.
Just thought I should let you know for your tracking.