The direct Eurostar train service from Amsterdam to London will not start in 2020 as planned, according to local broadcaster AT5.

The introduction of the service without time-consuming passport checks in Brussels is taking longer because of the complexity of the treaties which have to be signed, AT5 said.

The Netherlands, Belgium, France and the UK all have to reach agreement on the service and that should have been done by the end of this year, AT5 said. But this has not happened, and so the direct service will not now start in early 2020, AT5 said, without quoting sources.

Eurostar said in October it will add one service a day to its direct route from London to Amsterdam and plans to more than double services in the future.

Eurostar introduced the new service to Rotterdam and the Dutch capital in April and says the extra train will operate from June 2019.

It is unclear what the impact of Brexit will be on the services, if any.