James Martin’s fiancée wears a timeless trilogy ring in platinum

Kim Johnson’s engagement ring works because it understands the old language of fine jewellery: a trilogy setting, a strong platinum mount and enough diamond presence to feel both personal and unmistakably costly. The ring is built around a substantial centre stone flanked by sizable side stones, with round brilliant-cut diamonds giving the piece its brightness and structure. Rather than reading as loud, it reads as deliberate.

That is the appeal of a trilogy ring in 2026. Jewellery designer Jessica Flinn-Allen, founder of Jessica Flinn Fine Jewellery and a specialist with more than 15 years’ experience, said the three-stone format traditionally represents the past, present and future, which helps explain why it still carries such emotional weight. In this case, the design does more than signal romance: it gives the ring a classic, resale-friendly silhouette that has long appealed to buyers who want significance without sacrificing scale. Platinum sharpens that effect, adding a clean, durable frame that lets the diamonds do the talking.

The ring made its public debut when James Martin and Kim Johnson appeared together at the TV Choice Awards on 2 February 2026 at the London Hilton on Park Lane. Johnson wore the ring on the red carpet, where its proportions and icy metal finish were impossible to miss. The couple had got engaged just weeks earlier, after Martin proposed over Christmas, making the awards appearance the first major public outing for the new ring and the relationship milestone it marked.

The timing also made the story land with unusual force. Martin had said in 2019 that marriage did not interest him because he had catered for so many weddings, so the engagement marked a clear reversal from a long-held position. Reports also say this is Martin’s first marriage, following his long relationship with TV producer Louise Davies, which ended in December 2023. Johnson was previously married to Arun Nayar. Against that backdrop, the trilogy ring feels particularly apt: it is not only about size or sparkle, but about a shift in personal history made visible in platinum and diamonds.