BUS and rail operator FirstGroup is in talks with postal chiefs about putting mail back on the trains.
The group, which runs bus services in the Huddersfield area and the Transpennine express rail service, is said to be keen to put post trains on routes linking London with the north-west, north- east and Scotland.
FirstGroup subsidiary GB Railfreight (GBRf) is understood to be in "advanced negotiations" with Royal Mail over the plan.
Royal Mail announ- ced last June it was switching all mail to road and air transport - after 173 years of using the railways.
The state-owned postal group said it had been unable to agree a financially- viable deal with then operator English Welsh and Scottish Railway.
The Royal Mail's historic Travelling Post Offices were abolished in January.
However, Royal Mail said at the time that it would consider any commercially-viable proposals from rail operators to revive services.
Royal Mail said it had been in talks with several operators during the past few months, but refused to give any more details.