Former Southern Water executives have appeared in court facing criminal charges related to an alleged conspiracy to defraud environmental and water regulators. Matthew Wright, 60, the former chief executive, alongside Philip Barker, Clive Massey, and Mark Gregory, are accused of manipulating water quality tests between January 2012 and December 2017.
The alleged scheme involved carrying out artificial "no-flow events" at wastewater treatment works. This tactic would ensure that there was insufficient water flow for sampling when company officials believed tests would indicate a failure. The prosecution contends that this was an effort to avoid environmental checks and potential fines estimated to be £45 million or higher.
The charges state that the individuals defrauded persons performing public duties in respect of the environmental and financial regulation of Southern Water Services Limited. Barker, Massey, and Gregory held positions as officers or senior operations managers during the period of the alleged offenses.
Southern Water itself faces separate charges for dozens of alleged permit violations. In addition to Wright, Barker, Massey, and Gregory, four other individuals – Mark Butler, 45; David James, 58; and Terry Stephens, 67 – also appeared in court, accused of the same offenses.
The case was heard at Bromley Magistrates' Court, where District Judge Stephen Leake deemed the charges related and transferred the proceedings to Maidstone Crown Court. The defendants are scheduled to appear there on October 9.
Wright, Gregory, and Butler were present in person for the hearing, while the others appeared via video link. All defendants were granted unconditional bail. Wright has denied any wrongdoing and has cooperated with the investigation, according to his solicitor.
The operator self-monitoring scheme, established in 2009, requires water companies to test treated effluent from their facilities to ensure compliance with environmental permit conditions. These tests are typically conducted by teams independent of the operational staff. Results are reported to the Environment Agency and Ofwat, with penalties for non-compliance. A "no-flow event" where a sample cannot be taken due to insufficient discharge flow is not recorded as a failure under the current system.