2 airlines in 2 game worlds

Hello, I was wondering weather or not we could have 2 airlines in 2 different game worlds. For example, I have airline 'A' in game world #1 and I want to start a new airline (airline 'B') in game world #2. Is this allowed?

Thank you

It is allowed, but you have to pay 4 Credits per day for each game-world you play in.

I play in Pearls, Gatow, Aspern, Elinikon and Riem.

And they may no co-operate in any way

Well, if there are on 2 different gameworlds, Ian, there is basically no way they could cooperate  ... ;)

Thank you all for your quick response. :D