Twelve tonnes of chocolate disappear in transit and, for most CPG companies, it’d be a crisis. For KitKat, it became one of the defining creative stories of Cannes Lions 2026 as Nestlé’s Mo Kingston tells The Drum.

What began as the theft of 400,000 KitKat bars on their way to retailers shortly before Easter ultimately became ‘The Heist’ – a campaign that captivated consumers, demonstrated the power of reacting authentically to real-world events and, by the end of the Cannes Lions, had collected the coveted PR Grand Prix alongside four Gold Lions and four Silver Lions. Its success lay not only in creative agility, but in the decades of brand-building that made such a swift reaction feel effortless.

It is notable that at a festival where AI has dominated conversation for the past two years, one of the week’s biggest winners was a campaign rooted in something far less fashionable – consistency. The theft itself may have been unexpected, but Nestlé’s ability to turn it into a global cultural moment was the product of years spent carefully defining what KitKat stands for, reinforcing its tone of voice, its personality, its distinctive assets and earning consumers’ trust.

For Mo Kingston, Nestlé’s global head of marketing strategy, the campaign became one of Cannes’ clearest reminders that while technology continues to transform marketing, the fundamentals of great brand building have never been more valuable.

“The story really did happen,” says Kingston, alluding to the early suspicions that the missing chocolate was simply a clever pre-Easter PR stunt. “A lorry load of KitKat left our factory in Italy and was stolen on its way to Poland. It contained 12 tonnes of chocolate and 400,000 bars. We went into the classic supply chain response, informing retailers and managing the issue. But then someone in the team realized it sounded more like a movie plot than a supply chain crisis.”

Instead of treating the incident solely as a logistical headache, Nestlé – supported by its agency VML London – made the unusual decision to invite consumers into the unfolding story. The company issued a factual statement confirming the theft before launching a digital tracker allowing people to check whether their KitKat bar was among those stolen by scanning the bar code. Consumers embraced the campaign immediately. News outlets picked it up around the world. Social media joined in. Even police forces became part of the conversation.

Kingston recalls one particularly memorable example: “One of my favorite stories came from India, where one of the state police forces posted that it wouldn’t have happened on their watch because they don’t take breaks. It was completely on brand because we’d built that consistency over time.”

That last observation is arguably the most important.

Many marketers watching from the outside could be forgiven for believing ‘The Heist’ was simply a brilliant piece of reactive marketing. Kingston sees something different. The stolen truck created the opportunity, but decades of disciplined brand building made the response possible.

“If you’re going to lean into culture, your brands have to stand for something very clearly and have very strong distinctive assets that give consumers, creators and ourselves something to talk about. We’re trying to codify what made that possible so we can do it again – without needing another stolen truck.”

The success of ‘The Heist’ also reflects a broader shift that could be felt across Cannes this year. While AI remained a dominant topic on stage and in meeting rooms, many of the campaigns that captured juries’ attention were grounded in emotion, authenticity and unmistakably human insight.

Kingston believes the industry is rediscovering something it has always known but perhaps temporarily lost sight of: “I think we’ve always been finding ourselves again because we’ve always known it. It’s easy to get distracted and run after something new. In many ways it’s coming back to what I’ve always known to be true. We need leaders who are genuinely curious about consumers and passionate about understanding them. If you don’t have that at the core of leadership, we’re going to struggle.”

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That isn’t to suggest Nestlé is slowing its investment in AI. Quite the opposite. The company is embedding the technology across marketing operations, from consumer insight and social listening to content creation and digital twins. The difference is that it sees AI as an enabler rather than the destination.

Kingston is clear that technology should amplify marketers rather than replace them: “It starts with a human and it ends with a human. AI isn’t going to take over everything we do, but it will make us quicker, more efficient and better. We’re using it to understand trends, synthesize data and create content faster, but we’ve got clear eyes that this is a tool, and we need to treat it with a lot of respect.”

That philosophy also shapes how Nestlé works with its agencies.

Rather than imposing blanket restrictions on AI, the company has opted for transparency. Kingston says agencies are expected to be open about where AI is being deployed, what safeguards are in place and when work transitions from internal processes into consumer-facing communications.

“Our agency partners are embedding AI, of course they are,” says Kingston. “What we’re asking for is transparency about where it’s getting embedded because we want to understand how it’s being used. A lot of our discussion is about making sure we’ve got clear guardrails and that transparency around where it’s being used.”

For work that reaches consumers, Nestlé applies its own governance and approval processes, particularly where data privacy and consumer trust are involved. It’s a pragmatic approach that acknowledges AI’s inevitability while recognizing that accountability ultimately remains human.

Perhaps the more surprising transformation happening inside Nestlé, however, has little to do with technology. Instead, it’s about teaching almost everyone in the company – from finance to commercial teams – the fundamentals of brand building.

As chief executive, Philipp Navratil pushes Nestlé towards what the business describes as “best-in-class brand building and innovation” to accelerate growth, Kingston has been helping lead a global program to embed a common marketing language across the organization.

The scale is impressive. Around 20,000 employees have already received training as part of the company’s refreshed brand-building framework – and not only marketers but colleagues working across commercial functions who influence how brands grow.

Kingston says: “If you’re in finance, you need to understand how brands work. Brands are our business, so everybody needs to understand those foundations because they’re going to drive growth.”

It’s a notable shift at a time when many marketers continue to argue that the discipline struggles to communicate its value in the boardroom.

Rather than asking finance teams to understand marketing jargon, Nestlé is teaching the commercial impact of brand equity itself. Kingston points to the direct relationship between brand strength, penetration and market share – connections that marketers may instinctively understand but which can sometimes become lost elsewhere in large organizations.

“Our CFO is talking about brand equity because brand equity is directly correlated to penetration, and penetration is directly correlated to brand share. We had to go out and remind people of that because you can assume everybody knows it, but sometimes you need to reset those foundations.”

For Kingston, ‘The Heist’ ultimately represents more than a successful campaign. It validates the investment Nestlé has been making in long-term brand building.

The company is now analyzing exactly why the campaign resonated so strongly – not in the hope of recreating another stolen truck moment, but to better understand the conditions that allowed the brand to respond with confidence, authenticity and speed.

“We’re coming off a strong Cannes this year, so we’ll take it back and codify again what worked and what it’s going to take. We use Cannes as an accelerator to learn what we can do internally and with our agency partners. We want this kind of groundbreaking work. We want to lean into culture, so we’re saying to our partners: come to us and show us those ideas.”

In a year when much of the industry’s attention was fixed on new technology and new platforms, KitKat’s win pointed to an enduring advantage. The brands that react best in the moment are often the ones that have spent years becoming recognizable, trusted and easy to play with.

Communications breakdown: KitKatgate wasn’t the joke we hoped for