Marshalls plc (MSLH), the UK-listed hard landscaping and building products manufacturer, has announced that its Chief Executive Officer, Simon Bourne, has been appointed to the board of Castings P.L.C. as a Non-Executive Director, effective 5 November 2026. The disclosure was made pursuant to paragraph 6.4.9R of the UK Listing Rules, which requires listed companies to declare outside directorships held by their senior executives. The appointment adds a cross-board role for Marshalls' chief executive, a development that investors in both companies may wish to monitor closely.

Key Points

  • Marshalls plc (MSLH) — UK-listed hard landscaping and building products manufacturer
  • CEO Simon Bourne has been appointed Non-Executive Director at Castings P.L.C., effective 5 November 2026
  • The announcement is made under paragraph 6.4.9R of the UK Listing Rules governing director declarations
  • Investors should watch whether Bourne's additional board commitment affects executive capacity at Marshalls

Simon Bourne Takes Non-Executive Seat at Castings P.L.C. Alongside Marshalls CEO Role

The announcement states that Simon Bourne, who serves as Chief Executive Officer of Marshalls plc, has accepted a Non-Executive Director position on the board of Castings P.L.C. The appointment took effect on Thursday, 5 November 2026. Castings P.L.C. is a UK-listed iron castings manufacturer, meaning Bourne will now hold board-level responsibilities at two separately listed British industrial companies simultaneously. The disclosure was filed via the Regulatory News Service and confirmed by Marshalls' Company Secretary, Shiv Sibal, who is the named point of contact for enquiries relating to this update.

UK Listing Rules Paragraph 6.4.9R Triggers Mandatory Director Declaration by Marshalls

Marshalls plc made this announcement specifically pursuant to paragraph 6.4.9R of the UK Listing Rules, which obliges premium-listed companies to disclose when a director takes on an external board appointment. The requirement is designed to ensure transparency for shareholders regarding potential conflicts of interest or time commitments that could affect a director's availability and focus. By filing through the Regulatory News Service, Marshalls has fulfilled its regulatory obligation in a timely manner, with the declaration coinciding precisely with the effective date of Bourne's appointment to the Castings board.

What the External Appointment Means for Marshalls' Board Governance

Marshalls plc operates across hard landscaping, roofing, and building products sectors, supplying products to the construction and infrastructure markets throughout the United Kingdom. As CEO, Simon Bourne leads the company's strategic direction at a time when UK construction activity and housebuilding volumes remain closely watched by the sector. His acceptance of a Non-Executive role at Castings P.L.C. is a standard practice among FTSE-listed executives, though investors may consider whether the additional commitment warrants further scrutiny of board governance arrangements at Marshalls. The company did not disclose any further detail regarding the terms or duration of the Castings appointment.