Honda Marine UK and Highfield Boats announced a joint Southampton Boat Show display including the UK debut of the Highfield ADV7 and the new Coaster 54. The underlying announcement was published by Highfield Boats on 12 September 2025, giving the development a clear primary-source date and provenance.
Boat-show appearances are useful milestones because they show when models become available for buyers to inspect together in a public setting. The event record also helps separate a regional or public debut from the earlier announcement of the underlying model.
For Leisure Boat Guide, the relevance is the confirmed change described by Highfield Boats, not the promotional language around it. The source is retained with this article so readers can review the original material and check any technical, regional or commercial details that sit beyond this news brief.
LBG's scope remains leisure boats below 12 metres. Model stories in this batch are confined to craft inside that limit, while equipment and company stories are included only where they directly concern the recreational small-boat market; broader products mentioned by a source are not being added to LBG by implication.
This article preserves the Highfield Boats source as the verification trail for the announcement. If specifications, availability, partnerships or product details change later, LBG can report those as separate updates rather than silently rewriting the historical news record.