Radio sitcom from The BBC about an alien invasion in the Home Counties. Geonin commander Uljabaan sets up a small-scale invasion to observe human beings ahead of a full invasion, placing the Buckinghamshire village of Cresdon Green under a force field with a Perception Filter to make the rest of the world forget its existence. So how do the residents of Cresdon Green respond? They keep calm and carry on, naturally. Nobody seems that bothered by the fact that they're cut off from the outside world, or by the prospect of Earth being taken over by aliens. Except for a small resistance movement...
- Aliens Speaking English: Uljabaan and The Computer speak English, but the minions only speak their own alienese.
- Backup Twin: When The Computer is destroyed by the Logic Bomb described below, it is simply replaced with another one exactly the same.
- Big Sister Mentor: Katrina seems to see herself as this to Lucy. She's not generally very good at it, though she does manage to coach Lucy through her A-Levels.
- Computer Virus: In "Ctrl-Alt-Del", we see one from The Computer's point of view.
- Cunning Linguist: Lucy, possibly. She seems able to understand the minions' language and later passes an A-level in Spanish, suggesting Hidden Depths in this area.
- Delicious Distraction: Uljabaan and his minions are extremely partial to Supreme Chef Margaret's cakes. In "Counter Plot", she is able to distract the entire cohort of minions with a spread of cakes.
- Faux Affably Evil: Uljabaan, though there are occasional suggestions that he's really a Punch-Clock Villain who Became The Mask and is really Affably Evil underneath.
- The Hero's Birthday: In a second season episode, Lucy turns 18. True to character, she celebrates by getting wicked drunk.
- Kid Sidekick: Lucy (17) to Katrina (34).
- Leaning on the Fourth Wall:
- When Lucy uses The Computer to Skype the outside world, she finds nobody believes her story. The Computer says it would help but everyone would think it was just an actor putting on an alien computer voice.
- In another episode, Katrina and Lucy contemplate using one of the minions working on a secret construction project outside the force field to sneak a copy of the village newsletter to the outside world. They abandon the idea for various reasons, one of which is that even if they got the newsletter out there and read, the perception filter has made everyone forget about the village - so whoever picked it up and found their hidden message about the alien invasion would just think Cresdon Green was a fictional location made up for a sci-fi series.
- Logic Bomb: The Computer can handle anything you throw at it... except the Duckworth-Lewis Method, which causes it to completely burn out.
- The Resistance: Main characters Katrina and Lucy. The working title under which the show was originally announced was, yes, The Resistance.
- Retcon: In the pilot, Katrina's dad Richard was the local vicar, but this was never mentioned again and it's suggested he has (or rather had) some kind of office job outside the village.
- Serious Business: The residents of Cresdon Green may not object to being isolated from the outside world, or to the Geonin's plans to conquer Earth and enslave and/or kill all its people, but they do object to things like the aliens jumping the queue for an allotment, or (horror of horrors!) building a wind turbine.
- Alien invasion or not, cakes are Serious Business for Margaret - to the point where a disagreement about which cakes should be sold at the village fete descends into violence. Every year.
- Wunza Plot: One's a teenager with no goals in life beyond getting intoxicated on a regular basis, one's a charity worker who's old enough to be the first one's mother (though she doesn't like people pointing it out). Together, they put up a comically ineffective resistance to their alien oppressors!