Depends what you mean. In Europe they use ground floor, then first floor and so on. In the US the ground floor is called 1st floor.
So if they were following European design in there, then they have ground, 1st, 2nd, (skip third which would be 4th in the US, yet labeled 3rd in Europe).
I'm sorry if I got this wrong for all of Europe, it might just be the UK that does this.