To get an idea of what is said on Company channels try liveatc.net.
Airport Detail: KJFK | LiveATC.net
Click on KJFK Company Channels.
It can be very interesting at times.
(Listening to ATC in the US and I presume to US ATC via the internet in this country is legal.)
(I've just edited the line above to make it clear that I am referring to listening to overseas ATC transmissions on the net. I do believe that LiveATC.net says that it cannot carry transmissions from UK airports due to local laws.)