I was at a model railway show today in Ally Pally but needed to meet up with Paula at Waterloo at 5pm to go and see the inaugural showing of 300 on the iMax screen. But I was almost scuppered by the Northern lines Charing Cross branch being closed. There was very little notice until I found a sign at Camden (long story) telling me it was sheet . This meant a journey down to London Bridge and then along the Jubilee. I was half an hour late and Paula was not best pleased. When I did the journey plan at the TFL site it did not mention this vital piece of information.