Thames Water have appointed Simon Siddall as their new chief financial officer. Simon Siddall will join the company as it embarks on the second year of a £1 billion investment programme to improve the Thames Valley’s water infrastructure.

Martin Baggs, Thames Water’s chief executive, said: “Stuart has a proven track record as a finance director in the construction, utilities and finance sectors.”

Mr Siddall will start at the end of September at Britain’s biggest water and sewerage company, after leaving his current role as chief executive of The Association of Corporate Treasurers.