A hit reality series looks like found footage of ordinary people colliding. It is closer to a commissioned drama in which the writers' room has been replaced by a casting office. Before a single applicant is seen, the casting team and executive producers draw up a grid of the ensemble they need: the instigator who forces confrontation, the emotional anchor others confide in, the comic pressure valve, the wildcard whose decisions nobody can predict. Casting is the act of filling that grid with real humans, and the archetypes come first, the names second.
The volume at the top of the funnel is enormous. Love Island has attracted well over 100,000 applications in a single year, more than Oxford and Cambridge receive between them, yet open applications supply only part of any modern cast. Casting producers scout directly on Instagram and TikTok, work talent agencies that now specialise in reality hopefuls, and mine the contact books of former contestants. Some series cast almost entirely through targeted approaches, because the person a format needs is often someone who never thought of applying.
From tens of thousands, the funnel narrows through phone screens, self-tape auditions and in-person interviews, where the questions are engineered to surface story. A casting producer does not want to know what an applicant does for a living so much as what they argue about, what they regret, who broke their heart and whether they can narrate all of it fluently to a camera. Contestants who speak in complete, vivid sentences save editors weeks; producers call it giving good interview, and it can outweigh looks or backstory.
Then comes the stage most applicants never hear about until they reach it: the chemistry test. Finalists are mixed in pairs and small groups, sometimes at a hotel over a weekend, while producers watch who sparks, who dominates, who withdraws and which combinations generate friction without tipping into anything unmanageable. A brilliant individual who flattens every room they enter will lose out to a less polished applicant who makes everyone around them more interesting. The unit of selection is the dynamic, not the person, which is exactly how an ensemble drama is put together.
The duty-of-care turn
The deaths of two former Love Island contestants in 2018 and 2019, followed by the cancellation of The Jeremy Kyle Show after the death of a participant, changed the legal weather around all of this. The Commons DCMS Select Committee held an inquiry into reality television, and from April 2021 Ofcom added participant-welfare rules to the Broadcasting Code, requiring broadcasters to take due care of the welfare of people who might be at risk of significant harm from taking part. Compliance is now a casting function, not an afterthought bolted on at transmission.
In practice that means independent psychological assessment before an offer is confirmed, typically a clinical interview plus standardised questionnaires, looking for anyone whose circumstances make the scrutiny of the show a foreseeable risk. It means briefing applicants, in plain terms, on what an appearance does to a person's life: the abuse, the pile-ons, the strangers with opinions about their body. ITV's published welfare framework for Love Island includes training on social media and financial management before villa entry, a minimum period of proactive aftercare contact once the series ends, and psychological support available throughout. Broadcasters that skip this now carry regulatory and reputational risk that no ratings spike covers.
The screening changed who gets picked. Casting directors describe passing on electric, volatile applicants who would have sailed through a decade ago, because a psych report flags them as unlikely to withstand the exposure. Vetting has widened too: criminal record disclosures, reference checks and a trawl of years of social media history, since an old racist tweet surfacing mid-series is now a predictable crisis rather than bad luck. The result is a quieter, more media-literate cast than the genre's early years produced, and a growing share of applicants who arrive already half-professional, with agents, press training and a content sideline. The machine that once hunted for unguarded ordinary people increasingly selects for people who understand exactly what the machine does.
