Three new CDs you can buy with your money

I have some more product out with which you can swap you hard-earned cash.

Doctor Who and the Uncertainty Principle is out this month. The Second Doctor Who and his companions Zoe and Jamie investigate a strange death and - long after she's stopped having adventures with the Doctor - Zoe continues her struggles with the sinister Company. It's performed by lovely Wendy Padbury, with her daughter Charlie Hayes returning as Company lawyer Jen.

• Top fact: the first time I met Wendy, she asked me to explain what Torchwood was (she'd been out of the country when it was on) and the more I told her, the less she believed me.

Blake's 7 and the Magnificent Seven is also out this month, as part of the Liberator Chronicles Volume 2. Jenna and Avon meet another band of rebels who are also battling the Federation - and might be doing it better than Blake is. It's performed by Jan Chappell and Paul Darrow.

• Top fact: Jan Chappell starred in straight-to-video coolness Shakedown: Return of the Sontarans in 1994. It was trying to follow up the success of that which led producer Jason Haigh-Ellery to set up Big Finish Productions. Big Finish later gave me my first gig writing fiction and I am slightly in love with them.

Doctor Who and the Empty House is out next month. When the TARDIS materialises in rural England in the 1920s, the Doctor and his friends Amy and Rory discover a crashed spaceship nearby. It’s the beginning of a nightmarish adventure for them...

• Top fact: Raquel Cassidy, who reads the story, played a space-wasp for me in The Judgement of Isskar - something she was kind enough to remember when I interviewed her on behalf of Doctor Who Adventures at the filming of The Rebel Flesh.