Cumbria's chamber of commerce has asked the new West Coast Main Line train operator to make sure the county keeps through services to London.
The existing operator, Virgin West Coast, will hand over to First Trenitalia, in a change of franchises from December, and the same firm will also run HS2 trains from 2026, once a high speed line to Crew is complete.
The chamber's concern is that the high-speed trains will only stop at Preston, with Cumbrian passengers having to change in Lancashire to catch services to London.
Rob Johnston, chief executive of the chamber of commerce, said: “There is a danger that Cumbria is left with a second-class rail service."
We’re doing our utmost to persuade First Trenitalia that it’s in their interests to ensure there isn’t any diminution of the rail service to Cumbria."