Catch a steam train in East London on Saturday

This Saturday there will be a chance to board a steam train in East London as it runs a route from Southend to the Bluebell Railway.
The heritage steam trains that pass through London usually stop only at the mainline terminus stations, but a 1948 era steam train will call at Barking to pick up passengers.
OK, you have to pay a princely price to be on board, but for bystanders, to see a steam train stop at a minor station is a rare enough sight to get a bit excited about.
The times are still be