Southern rail services severely disrupted as train driver members of the Aslef union take strike action.
The strike action is due to take place today, tomorrow and Friday.
Southern is asking customers to only travel if it is essential and to work from home if they can.
Southern's parent firm Govia Thameslink (GTR) is in dispute with Aslef and the RMT unions over the role of guards.
Updates on Tuesday 10 January 2017
Tom Darby
BBC Live reporter
We're done for today - thanks for joining us and we hope you got home safely.
If you'd like to get in touch with us, you can get us on Twitter, external using #Southernstrike, on Facebook, external or by sending us an email.
Southern rail services have been severely disrupted as train driver members of the Aslef union take strike action.
The walkout is taking place today, tomorrow and Friday, with further strikes scheduled for 24, 25 and 27 January. Southern is asking customers to only travel if it is essential and to work from home if they can.
Southern's parent firm Govia Thameslink (GTR) is in dispute with Aslef and the RMT unions over the role of guards.
The Labour MP for Hove, Peter Kyle, tells the BBC he thinks Jeremy Corbyn should be willing to criticise the unions over the Southern strike.
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Stuart Maisner
BBC Live reporter
The Mayor of Seaford, Lindsay Freeman, described how the strike has affected the town.
She was speaking at a BBC TV debate which aired last night.
One of the few trains scheduled to run during the strike on Tuesday was virtually empty, the BBC discovers.
One of the few trains scheduled to run during the strike on Tuesday was virtually empty, the BBC discovers.
Read MoreLabour leader Jeremy Corbyn backs striking Southern train drivers, saying he would join a picket line.
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Marc Ashdown
BBC reporter
I travelled from Caterham to London Victoria on one of only a handful of Southern trains running today.
How is the strike affecting you?
You can get involved by using #Southernstrike, external, by emailing us or sending us a message on Facebook, external.
I think that the "issue" now seems to be less about safety and more about who is to blame. Enough is enough - get back to work.
Chris Smith, Polegate
I travel to and from work every day from Shoreham to Worthing and whereas it is not as bad for me as those poor people travelling longer distances the frustration is that nobody responsible seems to care at all, not the Union, Government or Southern that this situation has continued for so long. Penalties should be imposed on Southern – then they would care. I assume this situation is going to continue until the end of the franchise so end it now and do everyone a big favour.
Anne Holland
The Southern strike is having a big impact on many businesses, including here at The Body Shop headquarters in Croydon.
Speaking last week, the General Secretary of Aslef was highly critical of the way Southern have handled the dispute.
These commuters avoided the Southern strike by taking a packed Thameslink train from Redhill to East Croydon.
While neither side has changed position, what is striking is how it seems animosity and virtually non-existent industrial relations seems to be preventing a deal.
Read MoreStuart Maisner
BBC Live reporter
Could Transport for London run some Southern rail services?
Caroline Pidgeon, Liberal Democrat member of the London Assembly, certainly thinks so.
Here's what she had to say at a BBC debate on Southern rail, which was televised last night.
Let's take a look at the Southern strike in numbers.
Image source, PAMembers of the Aslef union are due to take strike action today, tomorrow and Friday.
There is also due to be strike action on 24, 25 and 27 January. The overtime ban will also continue.
Southern says that passengers can get more information about strike day compensation here, external.
Here's what commuters at London Bridge station had to say this morning.
Mick Whelan, the general secretary of the Aslef union, whose members are taking strike action on the Southern network today, has released this statement.
Quote MessageWe greatly regret the industrial action we have taken on Southern Railways today. We don’t want to inconvenience passengers, nor do our members want to lose money, because we want to help build a better railway for Britain. But we have been forced to go on strike by an intransigent management that has not been prepared to negotiate with us.
Quote MessageSouthern are bullies. Throughout this dispute, from when they first announced their intentions ten months ago, they have tried to force through changes in the terms and conditions of staff by tearing up agreements rather than by negotiating.
Quote MessageIn contrast, we stick to deals we have made and have always been willing to negotiate when someone shows goodwill; that is how we managed to strike a deal last year with ScotRail which works well for the company, the passengers and the staff. So it can be done!
Quote Message‘We still hope that Southern will see sense and sit down with us and talk about how we can move forward in a way which works for passengers, for staff, and, yes, for the company, too. Our door is, and has always been, open.
Quote MessageIt’s now up to the company, and the government, to be flexible and to end the misery of commuters. The ball is in their court.
Mick Whelan, General secretary, Aslef union
Transport Secretary Chris Grayling this morning condemned the latest strike action at Southern rail.