This concludes our live coverage of the disruption to Channel Tunnel services today.

Services remain suspended after smoke was detected by two CO2 detectors in the south tunnel at around 11:25 GMT.

A load on a lorry on board a train, en route from the UK to France, had been "smouldering", a Eurotunnel source said. No-one was hurt in the fire.

Eurostar, which operates passenger trains, has cancelled all its services for Saturday, while Eurotunnel says it expects to resume vehicle and freight services on Saturday night.

For further updates on the situation check the news website.

Eurostar has tweeted, external: "Confirmation is currently awaited as to tunnel re-opening tomorrow together with any specifically Eurostar service resumption."

Tim Hatton from Guildford emails: We've been in Paris for a friend's birthday lunch - we think we must have got one of the last trains through this morning and are now at the airport on the way home. Most expensive lunch ever!

The official Eurostar twitter account tweets, external: We're handing over now to our on call team who will continue to help and answer your tweets tonight - have a good evening wherever you are.

Sarah Lee in Belgium emails: We were stuck for three hours on a train at the entrance to the tunnel on the French side. They announced after 20 minutes that the tunnel was closed and took another 2h40 to get us off. Sent us to the ferry where it was total chaos.

We were rammed by a white van which was trying to get ahead in the queue and were given no information on the departures or available places. Now in queue for the 18:15 ferry which clearly won't be leaving on time as it's just unloading! Nightmare journey!

@BenJamesHoodtweets, external: Walked past unbelievable queues for the Eurostar on my way to Lyon today and the tunnel is still closed. Unlucky ladies and gents.

Anna Brown emails: I am British and live in Belgium, was meant to be travelling back home to Brussels today, from Folkestone on the Eurotunnel.

Luckily the closure news broke just before I left, so I rushed to make a ferry booking with P&O for the 1745 crossing. This has now been delayed by an hour, maybe longer.

I'm sitting here dockside, Dover is packed, all lanes full with waiting trucks and car passengers, everyone hoping to get across. It's pretty chaotic, plus the heightened security hasn't helped. Hope I get across the channel tonight!

Services on the car shuttle service are expected to restart as soon as possible after French firefighters have given the all-clear, a Eurotunnel spokesman said.

He told the Press Association news agency the south tunnel would reopen - following the fire in the north tunnel - and Eurotunnel anticipates running a full service on Sunday.

The latest statement, external from Eurostar said it was still "unable to run trains today" because of the closure.

"If you were planning to travel today, we advise you to postpone your journey. Please do not come to the station."

Jonathan Martin emails: After 15 days of inter-railing to Istanbul and back we were due to get the 17:13 back to St Pancras. Eurostar have offered to compensate up to £150 for a hotel room as well as extra for travel and food expenses. This is pretty sweet after staying in hostels the last couple of weeks and being on the train for pretty much 26 hours straight from Belgrade in the last couple of days.

Eamonn Thorpe emails: Wife and daughter trapped in France. Not much money for alternative arrangements and can't get through to Eurostar! Also no update on website as to what passengers should do!! Seems to be a total lack of urgency from Eurostar.

Penny Whitney emails: I and my two travelling companions were booked on the 14:13 Paris to London Eurostar today. We were already in the departure lounge when the announcement came that the trains were being cancelled.

We have been told to go back to the station before 8 am tomorrow, as our tickets will be valid on any train. However, I guess several hundred people will be doing the same thing!

There doesn't seem to be any process or procedure for rebooking onto a specific train tomorrow. I guess it will be 'first come, first served'! Fortunately we were able to book into the Gare du Nord station, and we will be recompensed for our additional, unexpected, expenditure. Not exactly delighted.

Eurotunnel expects to resume Le Shuttle services through the Channel Tunnel this evening following a lorry fire, it has said.

Tom Cosgrove emails: Currently we are in Paris with a large group of students from our school, ACS Cobham International School. We came here Friday morning to play rugby and basketball against the British School of Paris and the American School of Paris.

Since hearing about this incident we have started to frantically arrange plans to make it home tonight. We originally travelled in by Eurostar and were planning on taking it home this evening.

Our 80+ students are occupying themselves for the time being but we are unsure if we can arrange for a coach to Calais and walk onto the ferry. We are also hoping a British coach will be able to pick us up from Dover.

Nigel Harris, managing editor of Rail Magazine, said as many as 20,000 passengers could have been disrupted by the fire.

"If you have 26 trains cancelled or reversed with a capacity of 780 people per train that is over 20,000 people immediately affected by the train that we know about."

The AFP news agency has reported that the fire in the Channel Tunnel is "in the process of being brought under control".

Pete Richardson emails: We are booked on the Euro Tunnel Shuttle to come back to the UK from France tomorrow morning. We now have absolutely no idea if the service will be running at all and no useful information from the Euro Tunnel about what to do, apart from having their sincere apologies and a 24 hour recorded phone service number.

All we need now is for the auto route to be closed because of the stacking of delayed freight lorries! Looks like a long weekend away is rapidly turning into a week of chaos to come; not for the first time either.

Doreen Hall emails: My granddaughter and her friend are stranded in Paris. They went to catch the Eurostar but were told to come back at 6 o'clock, no mention of a definite hotel for the night, the staff at Eurostar told them if possible they would provide hotel accommodation. There are a significant number of people stranded in France - no-one is helping them and in the current situation in Paris where is the British Embassy, why are they not helping UK citizens?

Other trains were then cleared from the tunnel and emergency services found the cause of the smoke was a load on a single lorry, which was smouldering.

The lorry was treated by fire fighters and Eurotunnel said the area is now being ventilated.

More details are now coming through about the fire earlier.

The BBC's Mark Smith, who has spoken to Eurotunnel, said two carbon dioxide detectors showed the presence of smoke in the north tunnel at 11:25 GMT.

The smoke was coming from a truck shuttle travelling from the UK to France and passengers and crew were then evacuated into the service tunnel.