Don't come here. They give 50 paintballs for free in exchange of 5 star reviews, that's why they have so many.
Their games are built so that you waste all your ammo.
Their rules are boring: headshots do not count, each team can only move within one side of the map, and winning conditions make the first 19 minutes of the game useless and it all comes down to the last 60 seconds. So there is no point on doing anything for most of each game.
People can shoot from within the spawn area, so basically all those who don't want to get shot at can stay behind and shoot at whatever moves (waisting amo and making it boring).
They make money by selling you paintballs: they try to convince you to buy expensive packages of 950 pbs per person, you can't bring your own pbs, and if anyone from your pre-paid team doesn't show up they won't give you their corresponding 100 pbs. All so that you have to buy more.
Their marshals are not paying attention to the game: they don't kick out people shooting at those "already dead", and they take out points without knowing if a person was shot or not.
The website advertises amazing maps, but when we were there we played next to trash containers piled up, and some wooden structures. No Space Wars, no Egypt, no Airplane crash, no military vehicles, no forest: just trash piled up nicely, some old phone booths and dismantled busses.
The groups are too big for any strategy to make sense: we were playing 20 vs 20 in very small maps (but you can't cross an imaginary line). They herd you into each game without giving you an option to choose what you want to play.
Adults play alongside toddlers, so of course they have to make the rules child-friendly, and it becomes very boring for adults.
The place is too far from everywhere to make this a worthwhile trip. If you live near London go to Bunker 51 instead.