ISS has worked in partnership with Riverside in Carlisle since 2006, the original contract having been extended in 2009 under a TPC 2005 Partnering Contract, designed to improve efficiency, reduce wasted time and effort, and promote mutually advantageous long term partnerships. Riverside is one of the leading social housing and regeneration organisations in the UK, owning or managing around 50,000 homes, from Irvine to Ipswich.