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GAS invests in female-founded, construction tech startup Qualis Flow


​Green Angel Syndicate is delighted to welcome Qualis Flow to its portfolio of companies that are fighting Climate Change.

The UK-based company Qualis Flow closed their latest investment of $2.4M in July 2021, bringing their total raised to $3.5M. The female-founded technology company provides construction teams with the data they need to be more sustainable.

​Qflow, a machine learning powered tool that automates tracking of materials & waste on construction sites, provides real-time alerts to engineering teams so they can manage quality and sustainability, and gives transparency to investors & developers. This investment round will help to scale Qflow and build a more sustainable future.

This investment round was led by the Green Angel Syndicate followed by PiLabs exceeding their pro-rata investment. These investors were followed by significant venture capital funds including international property tech investors Groundbreak (from Canada) and Suisse Immo Lab (of Switzerland), and the UK impact-focused fund Vala Capital. With this range of exceptional support, Qualis Flow is well set to take to the international stage and leave a more sustainable construction industry in its wake.

​According to the UK Green Building Council, 40% of the world’s raw resources are used in engineering and construction and 40% of global emissions come from the built environment. What people don’t know – which is quite terrifying – is that 13% of all those materials that go on to a construction go direct to waste, without actually being used. What’s more, this inability to manage materials during construction is now having an impact on our everyday lives. No one will forget the horrific Grenfell tower disaster, in which 72 people lost their lives. The use of sub-standard materials had a critical part to play in this catastrophic event. The industry has woken up to this risk and their responsibility in managing it, and Qflow is here to help.

Deployed on construction sites across the UK, Qflow services the entire commercial construction spectrum, working with some of the biggest Tier 1 contractors and developers including Bouygues UK and Landsec, and regional SME contractors such as John Perkins in Bristol. They aim to use this cash injection to further develop the Qflow tool, to link with BIM tools and enable design verification, while also scaling across the UK and beginning to launch internationally.


​Notes to editors

Please take a look at the and see the media pack attached for images.Green Angel Syndicate (GAS) is one of the largest active angel syndicates in the UK and the only one specialising in the fight against Climate Change. GAS has attracted over 290 members and invested more than £10 million in 27 start-up or early-stage companies across 10 different economic sectors.For more information or to speak to Green Angel Syndicate, please contact

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