For all of you who just can’t get enough of the Sixth Doctor, this release celebrates 40 years of his travels with a special run of adventures…

“It was a milestone that just had to be celebrated,” says producer Jacqueline Rayner. “Our job was to show just why dear ol’ Sixie is so beloved by Big Finish fans – of course, the main answer to that is ‘Colin Baker’ – and shine a light on what he brings to Doctor Who.”

The set is made up of six chapters (by Rayner, Chris Chapman and Robert Valentine) that follow the quins of the title as they set out on an epic and deadly mission – including a brush with the Sontarans.

These stories are available from big nish.com (£18.99 for a download and £22.99 for download and CD), but you can win yourself one of FIVE copies we have on offer by answering this question:

TERMS AND CONDITIONS: The competitions open on Thursday 28 March to Wednesday 24 April. One entry per person. The competitions are not open to employees of DOCTOR WHO MAGAZINE or anyone else connected with DWM, the printers or their families. Winners will be the first correct entries drawn after the closing date. No purchase necessary. DWM will not enter into any correspondence. Winners’ names and county of residence will be available on doctorwhomagazine.com. Entrants under 16 years of age must have parental permission to enter. To read the BBC’s code of conduct for competitions and voting visit https://www.bbc.com/editorialguidelines/guidance/code-of-conduct. Prizes will be sent to winners as soon as possible.