Eurostar passengers faced travel misery on Saturday as extreme weather led to widespread cancellations across the network.All high-speed services between Ebbsfleet International and London St Pancras International have been axed due to flooding in a tunnel under the Thames.Eurostar has cancelled at least 14 services in and out of London St Pancras International as heavy rain and strong winds continue to batter the capital.Southeastern Railway is also running no services between Ebbsfleet and London St Pancras International.