IF YOU GO ...

Reserved tickets for Mail Rail have sold out until early December 2017 at this writing, so it’s best to plan ahead. However, a limited number of walk-up tickets are available each day at 10 a.m. Tickets cost 14.50 pounds per adult and 7.25 pounds for children with discounts for students and those older than 60.

Mail Rail operates from 10 a.m. to 4:30 p.m. and the Postal Museum from 10 a.m. to 5 p.m. 15-20 Phoenix Place, London WC1X Postalmuseum.org