Southern is to scrap food and drink trolleys on all its trains from Sunday 26 July.
The decision takes effect on the day Southern becomes part of the Govia Thameslink Railway franchise.
Thameslink trains already run without trolleys on board.
Southern said: “The popularity of station coffee shops and food outlets has steadily increased as we have invested in and developed our stations over the past few years with the majority of passengers opting to purchase food and drinks before they board their train.
“The number of customers who want to use the on-board trolley service tells us that this is no longer our customers’ preferred service and so our current on-board trolley service will end on (Sunday) 26 July when Southern Railway joins the Govia Thameslink Railway franchise.”