TL;DR

Guidewire, which sells software to insurers, agreed on Tuesday 27 October to acquire hyperexponential, a London company that builds AI tools for underwriting and pricing. Reuters reports the price as £1.3bn ($1.7bn) in cash, with up to £300m ($400m) more if revenue targets are hit, putting the total at up to about £1.6bn ($2.1bn).

The deal

hyperexponential’s software is used by insurers writing commercial property and casualty cover, helping them price risk. Guidewire says the purchase will let AI agents sit alongside human underwriters, assessing a risk, putting a price on it and making decisions. In our view, the framing suggests underwriters stay involved, though Reuters does not say who signs off each decision.

Guidewire will pay with cash it already holds plus £750m ($1bn) of fresh term loans arranged with Citibank and Bank of America. It expects the deal to complete in the second quarter of its 2027 financial year and says its first-quarter forecast is unaffected. Over 570 insurers in property and casualty lines, spread across 44 countries, already use Guidewire’s software, which gives hyperexponential’s tools a large installed base to sell into.

Reuters’ report is brief, and neither company’s comments beyond the deal terms appear in it.

Why it matters for UK AI

For the UK, this is a sizeable sale of a London-built AI company to a larger software group. In our view, it also shows where buyers see value in applied AI: in software built into a specific professional workflow, here the underwriter’s pricing decision, rather than in general-purpose models.

Looking Forward

An obvious question when a larger group buys a UK AI company is what happens to the team and its London base. Reuters does not say, and those details may follow as the deal moves to completion. For insurers already on Guidewire, the practical test will be how quickly hyperexponential’s pricing tools arrive inside the platform they use, and how underwriters are kept in control of the decisions the agents help make.

Sterling figures converted at the ECB reference rate of 27 October 2026 ($1 = £0.75).