P&O Ferries of the UK has carried more freight across the English Channel in the first six months than in any other comparable period in its modern history.
The shipowner said the record figure of 710,813 lorries was achieved by its fleet of six vessels.
The total is up 10.4% from 2016, which was itself a record half-year.
Cargoes have included fresh fruit and vegetables, wine and beer, white goods, building materials and components for production lines.
Managing director Janette Bell said: "These record volumes illustrate the continuing resilience of the British economy and the vital importance of reliable and punctual cross-Channel transport to thousands of business in Britain and Europe.
"Many of the loads which cross the English Channel on our ships come via lorries from Central and Eastern Europe and we are also seeing more shipments via trains from Spain and the South of France."
"We expect growing populations on both sides of the English Channel to continue to drive higher freight volumes in the years ahead and our door-to-door service is ideally suited to the requirements of exporters across the continent of Europe."