I only occasionally travel to London, but am due to attend a work meeting in Canary Wharf this Thursday when I gather there will be a tube strike. I am thinking I could catch a Southeastern train from Kings X to Stratford and take the DLR from Stratford to Canary Wharf, but am wondering whether non-tube trains in London are going to be so packed that it might be impossible to get on. Can any Londoners who have used these before during tube strikes please advise? TIA