The firm, which is a wholly-owned subsidiary of Scottish Water, will provide water and waste-water services to the Ministry of Justice under the deal, worth more than £70 million.
The three-year agreement will see the Scots group manage services at more than 900 sites, including the Home Office and National Probation Service, Courts and Tribunals Service and the HM Prison Service in England.
Business Stream will also develop a “bespoke water management strategy” that will help the organisation to reduce its overall water use.
Chief executive Jo Dow said: “We have a vast amount of experience in working with the public sector and are now looking forward to offering our expertise and suite of innovative services and solutions to the Ministry of Justice, helping the organisation to save time, water and money.”
The firm recently announced that it had become the second largest water retailer in the UK, following its acquisition of the non-household customer base of Yorkshire Water Business Services and recent business wins in the market.
The water company, which services more than 340,000 customers across the UK, confirmed that since the English market opened in 2017 it has generated some £280m in new contract wins.
Headquartered in Edinburgh, Business Stream also has offices in Glasgow, Worthing and Bradford, and employs more than 400 staff.
The Scottish non-domestic water market was opened up to competition in 2008 with the equivalent English market doing the same in 2017.
A message from the Editor:
Thank you for reading this story on our website. While I have your attention, I also have an important request to make of you.
With the coronavirus lockdown having a major impact on many of our advertisers - and consequently the revenue we receive - we are more reliant than ever on you taking out a digital subscription.
Subscribe to scotsman.com and enjoy unlimited access to Scottish news and information online and on our app. With a digital subscription, you can read more than 5 articles, see fewer ads, enjoy faster load times, and get access to exclusive newsletters and content. Visit https://www.scotsman.com/subscriptions now to sign up.
Our journalism costs money and we rely on advertising, print and digital revenues to help to support them. By supporting us, we are able to support you in providing trusted, fact-checked content for this website.