. >> my name is nigel cudlipp.ther, derek, was a master dental technician here in london for over 50 years. he died in 2007 and left his most important work to me. >> hello. i'm jamie. >> nice to meet you, jamie. i'm nigel. welcome to london and welcome to limehouse. >> thank you. it's a beautiful spot. is this where you live? >> we do. we live on a yacht out there. please come this way. >> thank you. nigel's career is in finance, originally for posh resorts and hotels and now for a museum here in london. but i didn't climb aboardto talt that. when i was told that i was coming to london to see teeth, i thought it was crazy. do you think it's crazy? >> it might look that way to many people, but churchill was a very, very important man. >> the most important man on the planet, arguably, when, in the spring of 1940, as hitler's forces overrun europe, winston churchill becomes prime minister. and his words become his country's most powerful weapon. >> never in the field of human conflict was so much owed by so many to