Out today is The Lure of the Nomad and the Sixth Doctor, played by Colin Baker, finds himself with a new companion in this journey.

Mathew Sharpe is played by actor George Sear, who listeners will recognise as the role of Arthur in AMC's Into the Badlands, Billy Cooper in Will for TNT, two series of Evermoor for the Disney Channel and Friday Download for the BBC.

For thousands of years, it has drifted through space, unimpeded, forgotten, seemingly lifeless. Now, finally, it has been discovered.

Responding to a distress call from the mysterious hulk, the Doctor and his companion, space pilot Mathew Sharpe, walk into a desperate situation. The multi-tentacled semibionic Makara were tasked with renovating the abandoned craft, but now they’ve begun murdering their employers.

The Doctor soon realises that the Makara have been programmed to kill, but by whom, and for what reason? Finding out the truth will mean uncovering a secret that threatens the entire Universe.

Matthew Elliot, writer of The Lure of the Nomad, told us about bringing this new companion to the Sixth Doctor: “It's been a great privilege to write the first of what I hope will be many stories featuring the Sixth Doctor's new companion, space pilot Mathew Sharpe.

“As a courier of urgently-needed medical supplies, Mathew's ship is caught in an electromagnetic whirlwind above the planet Ormelia. It's only the timely arrival of the TARDIS that prevents poor Mathew going the way of his vessel. Despite the Doctor promising him just one trip through time and space, they've been together on a number of adventures when we first see them together in The Lure of the Nomad. Mathew is a good-natured soul, quite naive in the ways of the universe, and fiercely loyal to the Doctor; think of him as a cross between Steven Taylor and Harry Sullivan.

“I know it seems quite odd that I, another Matthew (with two 't's) should be writing the debut adventure of another Mathew, but I promise you, the choice of name was the decision of Big Finish script editor Alan Barnes. I'm not quite so egotistical as to demand that the new companion should share my name!

“Where he and the Doctor go from here, I really don't know, but I'm as interested to find out as everyone else!”

You can get The Lure of the Nomad now at £14.99 on CD or £12.99 on download. All CD purchases unlock a download option via the Big Finish app and the Big Finish website.

Or you can save money by getting a subscription to the Doctor Who Main Range. When you subscribe you'll get 30% off the price, free specially recorded Short Trips stories, PDFs of the scripts, and extended downloadable extras. You can subscribe for either 6 or 12 releases.

Coming next month in the Doctor Who Main Range the Sixth Doctor goes back to the Industrial Revolution in Iron Bright.

It's London, 1828, and the father-and-son team of Marc and Isambard Kingdom Brunel, are masterminding a dangerous project – the digging of the Thames Tunnel. There's just one problem…

The Brunels' tunnel is haunted. Every night, a spectral blue lady walks the excavation. Now, the 22-year-old Isambard, eager to step out of his famous father's shadow, finds himself dealing with not only the supposed supernatural, but a second unexpected guest – a colourful trespasser who calls himself 'the Doctor'.

Isambard would like to know a great deal more about this strange man and his mysterious blue box...