Great Britain has a developed system for detecting suspicious betting, but few cases have led to successful criminal prosecutions. The House of Lords International Agreements Committee published its report on 11 September 2026, while the UK’s proposed ratification of the Council of Europe’s Macolin Convention remains under parliamentary scrutiny.

The UK has signed the treaty but has not ratified it. The Government laid the agreement before Parliament on 4 June 2026. The scrutiny period was extended to 12 October 2026. The House of Lords is scheduled to debate the agreement on 15 September 2026.

19 cases referred, no successful Commission prosecution

Written evidence from the Department for Digital, Culture, Media and Sport, dated 25 August, said the Gambling Commission had referred 19 betting-integrity cases for enforcement action during the previous three years.

None had resulted in a successful criminal prosecution by the Commission when the evidence was submitted. The evidence confirmed that one successful prosecution under Section 42 of the Gambling Act 2005 concluded in 2015. That case involved cheating at gambling.

Several investigations remain ongoing, including prosecutions linked to Operation Scott, according to the Government evidence.

Section 42 covers cheating at gambling, attempts to cheat and helping another person to cheat. The Gambling Commission can investigate and prosecute these offences in Great Britain. It can also void individual bets and impose regulatory sanctions when licensed operators fail to meet their obligations.

Intelligence does not automatically become courtroom evidence

The Commission’s Sports Betting Intelligence Unit received 595 reports of suspected betting-related corruption in 2025. That was up from 464 reports in 2024.

The Lords report said the increase may reflect both the growth of regulated markets and stronger monitoring. About one third of the reports involved sporting events held in Great Britain or participants from Great Britain.

  • Football, tennis, esports and table tennis generated the largest volumes of reports.
  • The figures record reports of suspicious activity, not findings that competitions were manipulated.
  • Proving criminal conduct can require evidence of relationships, communications and money flows.

A sports body may impose a disciplinary sanction under a lower civil standard of proof. Prosecutors must prove a criminal offence beyond reasonable doubt. This difference helps explain why intelligence may lead to disciplinary action without producing a criminal conviction.

What ratification could change

The Macolin Convention would formalise international cooperation and information sharing. A manipulated event may involve an athlete in one country, a betting account in another, money moving through a third jurisdiction and organisers based elsewhere.

The Lords committee said ratification would strengthen cooperation with foreign authorities and give the UK a seat on the Convention Follow-up Committee. It also warned that ratification alone would not prevent manipulation or eliminate illegal betting markets.

The practical test is whether intelligence can move more quickly from regulators and sports bodies to investigators, prosecutors and courts.

The Gambling Commission already works with betting operators, sports governing bodies, police and international partners. Its existing framework allows referrals to Europol, Interpol and other national platforms.

The committee heard that ratification could replace some consent-based arrangements with more formal and predictable cooperation. That could improve the route from suspicious activity reports to cross-border investigations, but it would not remove the need for admissible evidence or investigative resources.

Lower-tier sport and prediction markets

The scrutiny also identified risks outside the largest televised competitions. Department for Digital, Culture, Media and Sport officials told the committee that lower-tier sport can have weaker governance, fewer resources and less developed education and reporting systems.

These conditions can leave participants more exposed to attempts at manipulation. The committee also examined micro-events, such as an individual player receiving a yellow card, and prediction markets that allow users to trade contracts linked to future events.

The convention is designed to remain technology neutral and can cover these forms of activity. Licence condition 15.1 requires operators serving Great Britain to report suspicious or irregular market activity to the Gambling Commission.

More reporting can produce more intelligence, but enforcement still depends on international cooperation, investigative capacity and evidence that meets the criminal standard.

Great Britain and Northern Ireland use separate systems

The Gambling Act 2005 and the Gambling Commission’s Section 42 powers apply to Great Britain. Northern Ireland operates under separate gambling legislation.

The Department for Communities told the Department for Digital, Culture, Media and Sport that Article 169 of the Betting, Gaming, Lotteries and Amusements (Northern Ireland) Order 1985 can support prosecutions for cheating linked to betting markets.

The Department for Digital, Culture, Media and Sport said the UK’s wider legal framework is sufficient to prosecute sports manipulation involving fraud, bribery, corruption or related offences.

Ratification is therefore at the scrutiny and proposed-ratification stage. It would not create a new criminal offence or immediately change betting licence conditions.

For Britain’s regulated betting market, the central question is practical: can the UK convert detailed betting intelligence into faster cross-border investigations and more cases that survive the criminal courts?