Featuring the classic Doctor Who adventures Invasion of the Dinosaurs and The Android Invasion, the UNIT Files boxset is released on Monday 9th January.

> Buy the boxset on Amazon.

To celebrate, we’ve got 3 copies of the boxset to give away!

For a chance to win, just follow CultBox on Twitter and tweet the following text:

_{Win #ClassicDoctorWhoBoxsets @cultboxtv http://bit.ly/wOrJsd}

Invasion of the Dinosaurs sees the Third Doctor face ravenous prehistoric monsters in deserted London, and The Android Invasion sees the Fourth Doctor battle robot duplicates in a strange village. Both stories feature UNIT, the United Nations Intelligence Taskforce.

Take a look at our Top 20 classic Doctor Who stories…

This competition has now closed. The winners are Jake Goldman (@64Fathoms) from Manchester, Amy Mai (@xmaiamyx) from Fallowfield and Thomas McKinney (@yolus) from Lanarkshire.

Terms & Conditions:
You must be resident in the UK to enter. Employees and contributors of CultBox.co.uk and their families are not eligible to enter. Only one entry per person is permitted. The judge’s decision is final and no correspondence will be entered into. The prize may not be transferred to any other person. No cash alternative or alternative prize is available on entrant’s request, but in the event of the advertised competition prize being unavailable we reserve the right to offer an alternative prize of equal or greater value. Entry in the competition implies acceptance of these rules.