Show set in England where teenage girl finds out she is alien

A teenage boy thinks the girl living next door might be an alien.

A young woman arrives in a city for the first time. She observes the people around her and realizes that she does not belong to that world, everything is alien to her. Even so, she tries to pretend to be one of them, to fit into this strange place.

In a post-alien Australia, lab-raised extraterrestrial Delta (03LT4) is integrating into society for the first time. Enrolled in university, Delta is ready to breeze her way through girlhood and humanity. Upon arriving, she instead faces awkward social encounters and suffers a bout of homesickness, becoming desperate for connection. Feeling lost, she meets Atlas, who is the first person to treat her like a 'girl' instead of an 'other'.

Nearly 40 years ago aliens crash-landed in the UK. They look like us, but are forced to live in a ghetto. Border control officer Lewis falls in love with one.

Sikes and Francisco are called in to a case when a mysterious young girl, who looks part Newcomer, part human, appears. Her huge, brutish counterpart tries to free her from the precinct, and their bizarre relationship turns out to be the result of a slaveship medical experiment. Meanwhile, Cathy and Matt are going to sex school, in preparation of becoming intimate, while Buck distresses his parents by his anti-human opinions.

A girl gets involved in the affairs of a mysterious society that supervises the activities of the aliens on Earth.

Government authorities incarcerate a girl whose extraterrestrial origin is discovered after an accident with a car.

Teenage outcast Luna struggles to fit in at school, bullied for being 'ugly' and 'poor'. Craving acceptance, an accident transports her through alternate realities in search of happiness, but with dire consequences.

An Alien is sent to earth to investigate the "incubators." She discovers that she is replacing a rogue agent. She questions her mission.

When a strange girl appears on a beach in England she has to depend on a local boy to believe her story and help her return home.