Eurostar is recommending travellers making non-essential trips cancel or postpone them as it expects delays due to weather conditions.

In a repeat of the problems Eurostar was suffering before Christmas, which saw five trains get stuck in the tunnel, a Brussels to London train broke down for an hour this morning due to unknown causes.

The train operator was already advising potential passengers to rearrange their trips as the bad weather across northern Europe means even trains running on a restricted service are subject to cancellation or delays.

Passengers who are determined to travel are still being advised to check in 30 minutes before the departure time shown on their ticket. Those deciding not to risk it can exchange or have their tickets refunded for free through the original point of purchase over the next two months.

The latest problems come following a three-day stoppage of Eurostar services last month after melting snow caused a series of breakdowns.