Palpable error (palp) voids explained

What actually matters to a bettor is what counts as "obvious" enough to trigger it, whether a win already sitting in your account is really safe, and where the line sits between a bookmaker's own terms and any wider UK rule.

What a palpable error is

A palpable error, also called an obvious error, is a bookmaker's term for a clear, unintended mistake in the odds, terms or settlement of a bet, one that stands out as wrong rather than a normal pricing judgement call. bet365's own house rules define an Obvious Error as one that, "when viewed in context seems to be a clear outlier based on publicly known information or when compared to similar offerings in the industry" (bet365 House Rules). William Hill describes palpable errors as including omissions "in respect of the announcing, publishing or marking of prices, handicaps, place terms, runners or results that occur despite [its] every effort to ensure total accuracy" (William Hill support).

In plain terms: a 2/1 shot priced at 5/2 is just a bookmaker taking a different view, not an error. A 10/1 shot priced at 100/1, or a market where the favourite and the outsider have had their prices swapped, is the kind of obvious mistake the rule is built for.

Common real-world triggers

A handful of situations account for most palpable error calls.

• A pricing or trading mistake. Two runners' or two teams' prices transposed, a decimal point in the wrong place, or a price left live after the market should have moved.
• A technical or feed glitch. A delay or fault in the live data feed produces a price out of step with what is actually happening in the match, or a market that should have been suspended stays open.
• A settlement error. The bet is graded against the wrong outcome, for example crediting a shots on target total to the wrong player, or settling the wrong side of a market.

What a bookmaker typically does: void or reprice

There is no single industry standard. The two outcomes used across the market are voiding the bet, or resettling it at a price the bookmaker judges correct.

bet365's rules describe the resettlement approach directly: "Where an Obvious Error is identified any bets will stand and be settled at the bet365 revised price." William Hill splits by scenario. For pre-event bets placed at odds more favourable than the correct price, it will "settle the bet at the accurate odds/terms at the time of bet placement or, on condition that verification is provided, at the best odds/terms available with" a named list of rival bookmakers. For in-play markets, William Hill will "settle/ resettle that bet at the accurate odds/terms, or if it is not reasonably practicable to settle/resettle that bet, will declare that selection and/or bet void." Betfair's sportsbook rules take a similar line, stating it reserves the right to correct a palpable error and settle at the corrected price rather than always voiding.

Which outcome applies depends on the specific bookmaker's own rules and how severe the mistake is judged to be.

Can this happen after a bet has been paid out

This is the detail that catches bettors out. bet365's rules state an Obvious Error can be identified "prior to the start of an event, in-play or after the event," and settled at the revised price regardless of when it is caught. William Hill's cash out rules note that once an obvious pricing error is identified on a selection, that selection cannot be cashed out, which shows the rule is written to reach a bet at any stage, not only before kick off.

Is there a UK regulatory limit on this

There is no UK Gambling Commission rule that sets a specific cap, time limit or fixed procedure just for palpable errors. What exists instead:

• Every operator taking bets from people in Britain must hold a UK Gambling Commission licence, and that licence carries general conditions requiring terms to be clear, fair and consistently applied, and requiring published rules on settlement and void bets.
• Where a payment or software fault causes an under or overpayment more broadly, the Gambling Commission's own guidance to licensees requires operators to report a confirmed fault within five days and to return money owed to customers "in a timely manner." That guidance covers faults generally. It does not set out a specific rule for palpable error pricing disputes, and it does not state a time limit after which a bookmaker can no longer correct a settled bet.
• The Independent Betting Adjudication Service (IBAS), a Gambling Commission-approved dispute body, is the practical route if a bookmaker applies its own palpable error rule in a way that looks unfair. IBAS's published guidance says it does not consider the general principle of correcting obvious errors to be unfair, but checks in each case whether the rule "has been implemented reasonably and fairly," and that obvious error or palpable error rules "must not be used to protect operators from errors of judgement or movements in the market they have failed to detect and respond to." IBAS also applies a test of whether the error "would have been discernible to a customer with a reasonable knowledge of betting and the sport in question."

The honest short answer: no specific regulatory cap exists beyond the general fair-terms licence conditions, and IBAS is the enforcement backstop if a bookmaker gets the call wrong.

What to do about it

This is a real risk with any UK bookmaker, not something specific to one operator, and not a FootyMetrics product feature. FootyMetrics does not settle or void bets; the tools below help you research a line, not dispute a bookmaker's decision.

You can browse FootyMetrics’ full set of betting tools for stats, trends and fair-odds research that sit well clear of this kind of dispute, since none of them settle a bet.