The Swedish Post

LONDON — The former chief executive of Southern Water and three other former employees have been charged with conspiracy to defraud British environmental and financial regulators over an alleged scheme to manipulate wastewater compliance testing at treatment works across southern England.

Matthew Wright, who led Southern Water during part of the period covered by the allegations, faces the charge alongside Philip Barker, Clive Massey and Mark Gregory. The Environment Agency alleges that the four conspired between 1 January 2012 and 31 December 2017 to defraud the agency and water-sector regulator Ofwat by creating artificial “no-flow” events during mandatory testing.

The alleged conduct involved manipulating operational conditions at wastewater treatment works so that insufficient treated effluent was flowing when sampling teams arrived. Under the Operator Self-Monitoring system, a genuine no-flow result meant that a scheduled sample could not be collected, was not recorded as a failed test and did not necessarily have to be repeated during the same testing period.

According to the Environment Agency and a High Court judgment released on Wednesday, the prosecution case is that company officers deliberately exploited that provision when they believed a treatment site would, or might, fail a regulatory test. The court said the alleged activity included arranging for wastewater to be removed from facilities by tanker to produce a no-flow result.

The accusations have not been tested at trial. Wright denies all wrongdoing, according to a statement issued by his lawyer, who said the former executive had cooperated fully with the Environment Agency’s investigation. The remaining defendants have not been convicted, and each is entitled to the presumption of innocence throughout the proceedings.

The charges became public after the High Court delivered a judgment rejecting Wright’s attempt to stop the Environment Agency from bringing the conspiracy prosecution. His legal challenge was directed at the regulator’s authority to prosecute the common-law offence, rather than at whether the allegations were factually established.

Wright’s lawyers argued that the Environment Agency, as a statutory body, did not possess a general power to prosecute fraud or other common-law offences and should be limited to offences specifically created by environmental legislation. They contended that a prosecution for conspiracy to defraud would fall outside the agency’s statutory remit.

The Environment Agency relied on Section 37 of the Environment Act 1995, which gives it powers incidental to carrying out its functions and expressly states that it may institute criminal proceedings in England and Wales. The regulator argued that prosecuting an alleged conspiracy designed to defeat wastewater controls was directly connected to its responsibilities for pollution prevention and environmental protection.

Lord Justice Popplewell and Mr Justice Hilliard found that the agency’s power was not unlimited but was broad enough to cover the alleged offence because of its close connection to wastewater regulation. The court refused Wright permission to seek judicial review of the summons and also refused to continue an anonymity order that had previously restricted publication of his identity.

The judgment said the allegations, if established, would amount to carefully planned and extensive dishonesty at a high level within the company and on a substantial scale. It stressed, however, that the court was addressing the Environment Agency’s legal authority to prosecute and was not determining the defendants’ guilt.

The Operator Self-Monitoring regime was introduced in the water industry in 2009. Instead of Environment Agency staff routinely taking every compliance sample, permit holders became responsible for collecting samples at their own wastewater treatment facilities, obtaining analyses and reporting the results to the regulator.

Testing teams were expected to operate separately from employees running treatment sites, while sampling visits were intended to occur without advance warning to local operators. These safeguards were designed to ensure that samples represented the quality of treated wastewater discharged into rivers, coastal waters and other receiving environments under normal operating conditions.

The results serve several regulatory purposes. A non-compliant sample can indicate a breach of an environmental permit, expose a company to enforcement action and contribute to assessments of whether a treatment works is repeatedly failing. The data also allow regulators to compare performance among sites and companies over time.

Ofwat has additionally used wastewater compliance information when assessing company performance against financial and service commitments. Repeated failures can affect regulatory incentives, customer rebates and penalties. The prosecution therefore alleges that manipulated results could have misled both the environmental regulator responsible for pollution controls and the economic regulator overseeing company performance.

The High Court judgment recorded the Environment Agency’s assertion that Southern Water’s own assessment indicated that the company avoided penalties of approximately £45 million. The agency believes the total may have been higher. That figure remains part of the prosecution allegations and has not been established as a criminal loss by a trial court.

Conspiracy to defraud is a common-law offence carrying a maximum sentence of 10 years’ imprisonment following conviction. The criminal case will now proceed before Medway Magistrates’ Court, where the defendants will have an opportunity to enter pleas and the court will determine the next procedural steps.

The Environment Agency said the proceedings followed a complex inquiry based on evidence gathered over several years. It said the legal challenge had to be resolved before the defendants and details of the case could safely be identified publicly.

“We can confirm that we are taking criminal proceedings against Southern Water Services Limited and a number of former employees,” an agency spokesperson said in the regulator’s announcement. The agency added that it would pursue people alleged to have committed serious environmental offences and welcomed the High Court’s judgment confirming its authority.

Southern Water Services Limited will separately face charges alleging breaches of environmental permit conditions connected to the same broad course of conduct. The Environment Agency has also identified three further former employees — Mark Butler, Terry Stephens and David James — who face charges relating to alleged failures to comply with environmental permits.

The legal distinction is significant. The four-person conspiracy case concerns an alleged agreement to deceive regulators through manipulation of the monitoring system. The company and additional individuals face separate allegations under environmental permitting rules. The Environment Agency has said it cannot provide more detailed comment while the proceedings remain active.

Southern Water described the allegations as relating to a historic set of failures between 2012 and 2017. The company said the issues were uncovered through an internal investigation in 2017 and reported to the Environment Agency and other regulators as soon as they were identified.

The utility said the current organisation had changed substantially under new leadership and shareholders, with reforms to its culture, governance and operations. It repeated an apology previously issued over the failures and said it was undertaking its largest investment programme to improve environmental protection.

Southern Water supplies drinking water and wastewater services to more than four million customers in parts of Kent, Sussex, Hampshire and the Isle of Wight. Its treatment works discharge into environmentally sensitive rivers and coastal waters, making the accuracy of compliance monitoring particularly important for public health, fisheries, recreation and ecological protection.

The alleged testing manipulation has previously been examined through regulatory enforcement. In 2019, Southern Water agreed to a £126 million package after Ofwat found serious failures in the operation of sewage treatment sites and deliberate misreporting of performance. The package included a £3 million financial penalty and approximately £123 million in customer rebates.

Ofwat’s investigation found that sampling processes had been manipulated, causing inaccurate information to be reported about the performance of treatment works and allowing the company to avoid penalties under the regulator’s incentive system. Southern Water accepted legally binding commitments to improve oversight, compliance processes and governance.

The criminal proceedings announced on Wednesday are separate from that regulatory settlement. Regulatory findings can lead to financial sanctions or enforceable undertakings without establishing the individual criminal responsibility required for a conviction. Prosecutors must prove the alleged conspiracy against each defendant according to the criminal standard of proof.

Southern Water has also faced major environmental prosecutions over unlawful sewage discharges. In July 2021, the company received a £90 million fine after pleading guilty to 51 environmental offences involving thousands of illegal discharges between 2010 and 2015 in Kent, Hampshire and Sussex.

The Environment Agency said that case involved 6,971 unpermitted sewage discharges from 17 treatment works and caused pollution in rivers and coastal waters. The 2021 prosecution concerned unlawful releases and environmental permit breaches rather than the individual conspiracy allegations now before the courts.

Those earlier cases provide context but do not determine the outcome of the new proceedings. The defendants must be judged only on admissible evidence presented in relation to the specific charges, and previous corporate penalties cannot be treated as proof that any named individual participated in a criminal agreement.

The case nevertheless intensifies scrutiny of a monitoring structure that has depended heavily on information produced by regulated companies themselves. Self-monitoring can provide frequent data and place responsibility on operators, but its credibility depends on strict separation between sampling personnel and site operations, reliable audit trails and strong external verification.

The British government has committed to replacing the existing operator self-monitoring approach with a strengthened “Open Monitoring” system. Ministers say the reforms are intended to improve transparency, reduce opportunities for interference and ensure that environmental performance can be independently scrutinised.

Environment Secretary Angela Eagle said the public had become deeply frustrated by pollution and that attempts to conceal environmental failures would be treated seriously. She said anyone found guilty would face the full force of the law and cited the government’s plan to end operator self-monitoring as a safeguard against similar alleged conduct.

The prosecution also has implications beyond Southern Water. The High Court’s interpretation of the Environment Agency’s powers confirms that the regulator may, in appropriate circumstances, pursue common-law offences that are sufficiently connected to its statutory functions. That could make individual criminal cases more viable where alleged dishonesty is used to obstruct environmental regulation.

The judges said prosecution of alleged fraud involving the manipulation of wastewater controls could help prevent pollution, deter comparable conduct and recover financial benefits obtained through criminal activity. Their ruling did not grant the agency unrestricted authority to prosecute unrelated crimes, but recognised that its mandate can extend beyond narrowly defined environmental offences.

For water companies, the proceedings underscore the potential exposure of directors, officers and operational managers when regulatory data are allegedly manipulated. Corporate settlements, customer rebates and permit prosecutions do not necessarily prevent prosecutors from examining whether individuals were personally involved in decisions intended to mislead public authorities.

The next stage will take place at Medway Magistrates’ Court. Because the case is active, the Environment Agency, Southern Water and other parties are restricted in what they can say publicly. Evidence concerning specific treatment works, communications among the defendants and the calculation of alleged avoided penalties is expected to be examined through the criminal process rather than through public statements.

Until the case is concluded, the allegations remain unproven. The proceedings will determine whether the claimed no-flow events resulted from a deliberate agreement to deceive regulators, whether each defendant knowingly participated and whether the prosecution can establish the offence beyond reasonable doubt.