Here's a map to help you make your way there. Activities start at 2pm and run till 6pm.
London Transport Museum
Also the London Transport Museum is running a number of half term activities including the rather sound instruction to "Don't Let the Pigeon Drive the Bus" on 21st February.
"When a friendly bus driver takes a break from his route he leaves the audience with one simple instruction, "Don't let the pigeon drive the bus!".
But, the cute blue pigeon is very clever. He begs the audience to let him drive the bus while the bus driver is gone. He pleads, whines, bribes, and even sings a song to get his own way - he wants to drive that bus!. Will he, won't he? ... the suspense is too much."
There are two shows at 12.00 and 15.00. Just don't let Brian Pigeon know about them, otherwise he'll be hopping on the Tube pretty sharpish to get in on the act. His sweary antics aren't really safe for kids.