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Science1 publisher3 min readPublished

Matched bettors who lost money blamed their own mistakes, a Bournemouth survey finds

Just over half of 2,112 UK matched bettors surveyed by Bournemouth University said they had lost money at some point, and most explained the loss as a miscalculation or a mistyped stake. The paper's title quotes one of them: there is no risk, so long as you follow the rules.

The Scientist · Science desk

What happened

  • Just over half of those respondents said they had lost money at some point while matched betting, an activity promoted online as a controlled or even risk-free way of making money.
  • Some described chasing wins or losses, staking additional personal money, or moving from matched betting into other forms of gambling.
  • The team cautioned that the survey captured experiences at a single point in time and so cannot establish whether matched betting causes later gambling behaviour.

Compiled by The ScientistSomething wrong?How this is made

Why it matters

  • constraint The survey records whether a loss ever happened, not its size or the bettor's net position, so it constrains the literal claim of zero downside without showing that matched betting loses money on average.
  • exposure Someone who books matched betting as a side hustle may not count a loss as gambling harm, and any protection that begins with a person identifying as a gambler will not reach that group.
  • decision Consumer protection arguments about free-bet promotions can now cite a peer-reviewed prevalence figure from a named cohort instead of forum anecdotes.

Matched betting is built to take the forecast out of betting. An online operator gives a new customer a free bet as a promotion, and the customer places bets on different results of the same event, a football match for instance, so the payout comes from the promotion and not from picking a winner [2]. Promoted that way online, it gets described as controlled or even risk-free [2].

What the Bournemouth team measured is narrower than the phrase it tests. The researchers surveyed 2,112 UK adults currently engaged in matched betting and analysed 2,954 personal accounts of whether they considered it gambling, what difficulties they had hit and what they had lost, which is about 1.4 accounts per respondent [1][13]. Just over half said they had lost money at some point [3]. Half of 2,112 is 1,056, so more than a thousand people reported at least one loss [12]. The published summary does not report how large the losses were or whether respondents were ahead overall.

The figure therefore sets a limit on the word risk-free without measuring return. A majority of people doing this have lost money on some occasion, which is not what a zero-downside promise describes. It is still compatible with a bettor who is up on the promotions and once fumbled a stake.

Dr. Reece Bush-Evans said the gap was what struck the team: "The contradiction between perceived and experienced risk was striking." Dr. Ruijie Wang described how respondents accounted for it. "More than half of those we surveyed reported losing money through matched betting, but the losses were commonly attributed to mistakes such as incorrect calculations, misunderstanding promotions or pressing the wrong button rather than to risk inherent in the activity," she said [4]. A loss filed as a wrong button press is a fault in execution, and it leaves the rule untouched. "What we found particularly interesting was that losses did not necessarily undermine people's belief that matched betting was risk-free," Wang added [5].

The accounts also carry harms the participants did not label as gambling harms: financial losses, mistakes, mental strain and emotional impulses, reported by people who frequently distinguished matched betting from conventional gambling [6]. Some described chasing wins or losses, staking additional personal money, or moving from matched betting into other gambling activities [7]. The team noted that people who treat matched betting as a financial strategy or side hustle may be less likely to recognise potentially harmful gambling behaviours [9].

The design cannot take the next step. The survey captured experiences at a single point in time, so it cannot establish whether matched betting causes later gambling behaviour [8]. Everyone in it was still matched betting when surveyed, which means it describes current participants and says nothing in either direction about people who tried it and stopped [14].

Bush-Evans and his co-authors argue the activity deserves more attention in gambling research and in consumer protection discussions [15]. "Matched betting remains surprisingly under-researched despite its visibility online," he said. "We would welcome further research following matched bettors over time and examining how matched betting is promoted through social media, online communities and affiliate marketing" [10].

What to watch

  • A cohort followed over time would test whether the moves into other gambling described in these accounts come after matched betting or run alongside it.
  • A content analysis of affiliate marketing and matched-betting communities would show who is supplying the risk-free wording the participants repeat.
  • Whether consumer protection bodies cite the majority-loss figure when assessing how free-bet promotions are advertised.
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