The action follows a similar cancellation in April which brought train services to a standstill.
Eurotunnel also said its Channel Tunnel shuttle train services between Folkestone and Calais were running normally.
Train services have also been hit by landslips across the county, including one at Dawlish.
Train services between London and Norfolk via Cambridge and Chelmsford have suffered problems because of ice.
Buses in the Greek capital offered partial services, while suburban and overland train services also were disrupted.
Peak-time train services to and from Inverness will be doubled in capacity from two carriages to four.
BBC: Kessock Bridge roadworks: ?1.8m plan to ease disruption
Roads are closed or treacherous, train services are hit and power cuts are affecting thousands of households.
Once the work is completed regular passenger train services will resume from Wareham to Corfe Castle and Swanage.
Train services from London's Paddington have returned to normal following two days of disruption, train companies have said.
More than 100 London Midland Saturday train services are expected to be hit by an ongoing driver shortage.
First Great Western said train services from Cheltenham to London were delayed in the Swindon area due to flooding.
In Mumbai, the country's financial hub, taxi, bus and train services were normal.
Prism Rail currently operate train services in Cardiff and the South Wales Valleys.
Elsewhere in the country 10 train services between London and Leeds on the East Coast Main Line were cancelled.
BBC: Schools and airports closed after heavy snow in England
Two new train services from Shropshire to London could be running by December.
More carriages will also be added to train services that travel along the southern shores of the Beauly Firth.
Virgin cancelled all train services to and from Scotland because of the snow.
Train services faced disruption while emergency signalling works were carried out in Birmingham.
Jocelyn Rankin, of Northern Rail, said it was too early to say how long be before normal train services resume.
BBC: Salford rail delays after train derailed and caught fire
Tuesday's strike blighted the journey of thousands of passengers after First North Western was forced to cancel all train services.
London came to a near standstill on Monday with all buses canceled and overground and underground train services severely disrupted.
Earlier, train services on the Southern Rail network were severely disrupted out of Brighton due to over-running engineering works.
The issue of hundreds of cancellations of train services by London Midland has been raised in the House of Lords.
Radio problems caused delays on all Northern Ireland train services, whilst the snow has meant flights from England may be late.
Thousands of commuters using train services to and from London are facing major delays after overhead cables came down in Hertfordshire.
More than 30 London Midland train services, including routes to London, Birmingham and Liverpool, have been cancelled because of staff shortages.
For the next 29 months, the company will provide train services across Cambridgeshire, Essex, Hertfordshire, Norfolk, Suffolk and links to London.
However, on Wednesday more than 15 London Midland train services, including routes to Birmingham and Liverpool, were cancelled because of crew shortages.
Some train services were delayed Wednesday, Deutsche Bahn spokesman Holger Auferkamp said, but Berlin's metro system, or S-Bahn, has not been affected.
Some people will have to plan alternative routes from Friday as 10 days of planned changes to train services starts during Easter.
BBC: Reading station delays warning as upgrade works ramped up
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