I want to say that they're the best Techno out there right now. It's a pretty bold claim, and we all tend to make big sweeping statements like that daily. But like, they're the best.
House, awesome, disco vibes. Big Room style too. I also enjoy the title, because to Bastille, Rollin' Deep means blasting intimidating Techno or extremely abrasive Dubstep while driving and ever breaking eye contact with the person in the car / walking next to you.
Rave House. I don't really know how to classify this sort of stuff. It's got that Dutchy boom ba dum ba boom thing, and it's minimal and super dancey. This is totally something Steve Angello would drop.