UK importers overpay billions in customs duties every year. Missed preference claims, incorrect tariff classifications, and unrealised returned goods relief add up — but most businesses lack the specialist resource to check every declaration. BorderAudit changes that. Our platform connects to HMRC via Government Gateway with a single authorisation click, retrieves your Trader Records Extract, and analyses every import line against 100+ automated compliance checks. What we find: • Missed preferential origin claims across all 43 UK trade agreements (EU TCA, CPTPP, Japan CEPA, and more) • Returned goods relief opportunities identified by ML-powered pattern detection • Tariff classification anomalies and valuation discrepancies • Invalid or expired REX numbers caught via exclusive live EU registry access What we deliver: • Ready-to-file reclaim packs for Tax Authority submission • 91% first-time acceptance rate • Full audit trail and compliance analytics dashboard • Processing capacity of 4.4M declaration lines per day Case studies: £144K recovered (fashion retailer, RGR), £221K (luxury manufacturer, missed EU preference), £82K (manufacturing, quota entitlement). Free for importers. Success-only pricing.