South West Water parent company Pennon Group is leaving the FTSE 100 in a rebalancing of the index, to be replaced by leisure travel company Tui Travel.
Pennon, whose shares have fallen 13 per cent this year, will now enter the FTSE 250 Index after a quarterly review approved by the independent FTSE Europe, Middle East and Africa Regional (EMEA) Committee. The change will come into force on 24 December.
The rules-driven reviews ensure the indices continue to portray an accurate reflection of the market they represent, and form an essential component to the management of the indices.
Pennon Group also owns waste management company Viridor, which has recently suffered profit losses. However, these have been offset by profit rises for South West Water.
Two publicly traded water utilities remain in the FTSE 100: Severn Trent and United Utilities.
With the UK government demanding a 50% reduction in storm overflow spills by 2029, the era of reactive management is over. Speaking in the House of Commons on 21 July 2025, then environment secretary Steve Reed said, “This Government will cut water companies’ sewage pollution in half by the end of the decade.”
ERG, the leading supplier of odour control systems and industrial gas cleaning & thermal systems, has been awarded the coveted King’s Award for Enterprise.
Welsh Water’s new artificial intelligence-driven tool, ORAI, has been shortlisted for three categories at the prestigious British Data Awards 2026 – underscoring the company’s commitment to using cutting-edge technology to deliver better outcome for customers.
Barhale has completed work on two separate Rapid Action Taskforce Spills projects it is carrying out for Severn Trent.
Hear how Scottish Water has completed its £235 million Ayrshire Glasgow Resilience Project - customers across Greater Glasgow, Ayrshire and East Renfrewshire will now benefit from a more secure and resilient water supply.
Hear how United Utilities is accelerating its investment to reduce spills from storm overflows across the Northwest.
Find out more about the remarkable career opportunities on offer at WSP - scroll down to watch the inspirational video.