The Department for Transport (DfT) has safeguarded the route of a possible extension to the Crossrail route from the planned terminus at Abbey Wood to Gravesend in north Kent.
If the extension goes ahead, it would eventually terminate at Hoo Junction.
According to transport minister Sadiq Khan, “This is good news for the people of Kent. Safeguarding will allow this important rail project to be extended in the future if the business case stands up. By doing this we are future proofing Crossrail.
“The Government is committed to Crossrail and the economic benefits it will bring to London and the South East,” he said.
Main works for Crossrail are expected to begin next year.