Saible, a UK construction fintech building software to stop project money from being delayed, withheld or trapped before it reaches suppliers, has raised £2.9 million from angel investors. The funding comprises £2.1 million already raised and a further £800,000 angel round, taking Saible’s total funding to £2.9 .
Saible tackles one of construction’s most persistent problems: systemic cash extraction by late and non-payment. On a large project, four or five tiers can separate the project owner and the smallest supplier. At each stage, a payment can be delayed or held back, often because the firm holding it can use it as free credit to fund their operations.
In the worst cases, the money never arrives: when ISG collapsed in 2024, it left more than £1.1 billion in unpaid debts, with hundreds of subcontractors unpaid for completed work.
The cost falls hardest on smaller firms and on the people who run them. Late payments mean missed payroll, staff layoffs and owners working unpaid to keep their businesses afloat.
Recent industry research from UK accountancy and advisory firm Menzies found that for the fourth year running, construction recorded more insolvencies than any other sector in the UK, with 4,450 firms failing in 2025 (up 9 per cent) and a further 1,180 in Q1 2026 alone.
