It's our 50th episode! To celebrate our golden jubilee we have a quick look back through our podcast archives to dig out some of our favourite and silly moments from the past 4 years. Surprise guests include: @hannahbeeblogs, Kieran Hodgson off Two Doors Down, and the Cailleach!

Elsewhere, Nightmare of Eden and Invasion of the Dinosaurs are in the Time-Space Visualiser and the quiz focuses on the life and times of Nicholas Courtney in 'Courtney or Court-nay'.

We also review the missing Hartnell historical Marco Polo. Alex has unwisely watched it all in one sitting, while Andy relied on a gatefold LP and Lou & Lalla acting out the entire story in a specially constructed pergola in his back garden while swigging back elderflower presse in straw hats.

Several fascinating matters are also discussed in relation to early Who. While Alex suggests that John Lucarotti might actually have nicked Marco Polo due to his preference for radio, Andy recounts what may be the most important Doctor Who memo of all time, written by the director of episode 4 (The Wall of Lies) John Crockett.

Andy also reminisces about the time he was almost found in contempt of court and Alex obsesses about horses and distances again. Yes it's exactly what you might expect from an episode of World Enough and Time, only a bit longer than usual - some might say bumper - and a bit more gilt-edged. See the finish!

Enjoy! We love you.

Andy & Alex xxx

Next Time: Inferno (gosh!)

Photo colourised and restored by Clayton Hickman.