Episode 475 (30th June 1965)

Plot
Emily leads the trip to the Blue John Mines with Dennis, Sandra, Irma, David, Hilda, Stan, Charlie, Minnie, Albert, Elsie, Len, Jack and Annie in attendance. Arthur Walker looks after the pub. The residents view the mines, 850 feet below ground level. Irma grows frightened of scaring David off. Dennis escorts Sandra. Lucille sees Harry off at Liverpool. On the coach back, David presents Irma with an engagement ring from the cavern. She accepts it.

Regular cast

 * David Barlow - Alan Rothwell
 * Annie Walker - Doris Speed
 * Jack Walker - Arthur Leslie
 * Minnie Caldwell - Margot Bryant
 * Albert Tatlock - Jack Howarth
 * Dennis Tanner - Philip Lowrie
 * Len Fairclough - Peter Adamson
 * Miss Nugent - Eileen Derbyshire
 * Elsie Tanner - Patricia Phoenix
 * Lucille Hewitt - Jennifer Moss
 * Charlie Moffitt - Gordon Rollings
 * Stan Ogden - Bernard Youens
 * Hilda Ogden - Jean Alexander
 * Irma Ogden - Sandra Gough
 * Harry Hewitt - Ivan Beavis
 * Sandra Petty - Heather Moore

Guest cast

 * Arthur Walker - Jack Allen
 * Tour Guide - Roy Barraclough