Case Study: Aqua Underwriting achieves faster, more accurate property-level underwriting and increased business with Ordnance Survey

Aqua Underwriting - Customer Case Study

Aqua Underwriting, a specialist high‑net‑worth home insurer, needed precise property‑level risk data to underwrite flood and subsidence exposures quickly through broker channels. To solve this, Aqua adopted Ordnance Survey data via the Airbus Defence and Space TerraSure platform, using products such as OS MasterMap Topography Layer and AddressBase Premium to pinpoint exact property locations, boundaries and outbuildings.

By using Ordnance Survey data in TerraSure, Aqua sped up and simplified its quoting workflow, enabling faster responses to brokers and more wins; the business now has around 10,000 policyholders, adds 250–300 new policies monthly and has achieved double‑digit year‑on‑year sales growth with very few flooding claims. Ordnance Survey’s detailed mapping let Aqua price risks at individual property level instead of postcode level, opening opportunities that broader underwriting would have missed.

Aqua Underwriting

Paul Woods

Head of UK Underwriting