The BBC's Formula 1 presenter, Suzi Perry, joins Richard Coles and Aasmah Mir to discuss life on the road, her passion for speed, her rock and roll childhood and time spent working backstage at her local theatre.
Ben Collins, ex-"The Stig" from the BBC's Top Gear, takes Richard on a circuit of Rockingham Racetrack.
With more than 30 years' experience Mark Thompson shares his passion for "amateur astronomy", gives simple steps on how you can get started without spending a fortune and explains what is happening with The Geminid meteor shower this weekend.
Hermen, an outreach worker for The Connection at St. Martin's, supported by the Radio 4 Christmas Appeal, recalls his time living on the street.
Robin Ollington describes how his suggestion led to Buckingham Palace displaying a welcoming Christmas Tree.
Katie Rogers shares her story of how, as a city executive, she followed her childhood passion to run away to become a circus ringmaster.
And actress Wendi Peters chooses her Inheritance Tracks - I Won't Last A Day Without You by Carpenters, and Hello Dolly by Barbra Streisand.
Stargazing - The Essential Guide to Astronomy, by Mark Thompson, is published by Philips.
Wendi Peters is appearing as Martha in White Christmas at London's Dominion Theatre.
The Radio 4 Christmas Appeal with St Martin in-the-Fields. This is the 88th Appeal for St. Martin's work to support homeless and vulnerable people across the UK. You can give to the Christmas Appeal online by going to the Radio 4 Christmas Appeal website.
Produced by Louise Corley.