See a vintage tube train on the London Underground this Sunday

The venerable 1938 era little red tube train will be passing through Central London on Sunday in an increasingly rare visit.Soon the train wont be able to make the trips* as modern signals wont work with its 80 year old kit, so this is a sight you wont be able to see soon.
This Sunday (17th March), there will be two trips, one in the morning running from Northfields in West London  via South Kensington out to Upminster in the East, and then back again in the afternoon via Baker Street and W