Forty-nine years ago, on a dark and cold November's evening, the very first episode of Doctor Who was broadcast.

The world's longest-running science fiction show made its debut with An Unearthly Child starring William Hartnell as the First Doctor, accompanied by Carole Ann Ford as his grand-daughter Susan. They would begin many adventures with schoolteachers Ian Chesterton (William Russell) and Barbara Wright (Jacqueline Hill).

Sadly, William Hartnell and Jacqueline are no longer with us, but Carole Ann Ford and William Russell regularly record with Big Finish on our Companion Chronicles and Lost Stories.

And if you're feeling in a nostalgic mood, why not listen to The Time Museum, which finds an elderly Ian Chesterton revisiting his glory days of journeying through time and space. James Goss's touching and beautiful script revisits an old junkyard in Totter's Lane, Earth history... and even the planet Jobis (from The Rocket Men).

It's a fitting way to toast a legend.