The ruling by London’s High Court against Antony Upton, the former interim CEO of Gardner Aerospace, marks a significant intersection of corporate fiduciary duty and national security politics. On March 20, 2026, Judge Richard Smith ruled that Upton breached his legal duties by secretly lobbying British Members of Parliament to block a deal that would have increased Chinese investment in his own company.
The dispute centered on a 2022 “debt-for-equity swap” involving Gardner’s Chinese owner, Ligeance Aerospace Technology (LAT), and a Chinese state-owned investment fund. The deal would have increased the fund’s stake to 32%, triggering a mandatory review under the UK’s National Security and Investment (NSI) Act 2021.
Upton argued his opposition was motivated by genuine national security concerns regarding Chinese state influence over a key UK aerospace supplier. However, the court found his actions were “primarily self-serving.” Evidence suggested Upton sought to undermine the deal to force a divestment of Gardner, hoping to secure his job under a different, non-Chinese owner. The ruling clarifies that while national security is a valid public concern, a corporate director cannot use it as a pretext to sabotage their company’s financial interests for personal gain.
This case lands at a delicate moment for Sino-British trade. Following the 2024 “China Audit” by the UK government, Prime Minister Keir Starmer has pursued a policy of “managed re-engagement”, balancing the need for Chinese capital with the imperative of protecting critical infrastructure. Currently, the ruling provides a degree of reassurance to Chinese investors. It signals that the UK judiciary will protect foreign-owned entities from internal sabotage by executives, even when those executives wrap their actions in the flag of “national security.” But, despite the court win for Gardner, the deal was initially “called in” and subjected to 11 onerous conditions by the UK government, including the removal of Chinese board members. This illustrates that while a CEO cannot lobby against their own firm, the UK state remains highly vigilant. Future Chinese investments in “dual-use” sectors (technologies with both civil and military applications) will likely face similar friction.
In the past, the UK and China have shared a volatile history in the defense and aerospace sectors, characterized by periods of deep cooperation followed by abrupt embargoes. In the initial years of 1960s extending to 1980s, the UK , unlike the U.S., historically showed a willingness to sell “non-lethal” aerospace tech to Beijing. In 1963, the UK sold Vickers turboprop aircraft, and in the 1970s, it supplied Spey jet engines and Trident jets. In 1986, China even made its debut at the Farnborough Airshow, showcasing aircraft built with a mix of Soviet and Western-influenced designs. However, 1989, the Tiananmen Square protests led to a comprehensive EU and UK arms embargo. This essentially froze direct military sales, pushing the relationship into the realm of “dual-use” technology and civil aerospace components. This only recovered in the mid-2010s, when the UK actively courted Chinese investment in nuclear power and tech. However, security concerns over Huawei and the Sizewell C nuclear project eventually led to a hardening of the UK stance, culminating in the NSI Act of 2021, which gave the government sweeping powers to block deals like the one Upton lobbied against.
The future of UK-China relations in high-tech sectors will likely be defined by De-risking, not Decoupling. Given the Gardener Aerospace decision, the UK will likely continue to welcome Chinese investment; but it would be in “green tech” (batteries, EVs), maintaining a “fortress” approach to aerospace and semiconductors. Further, the Gardner case highlights the role of “government observers” on boards. We can expect more deals to be approved only with “managed transparency,” where the UK government retains a seat at the table to ensure intellectual property does not migrate to Beijing. So, this ruling sets a high bar for “whistleblowing” CEOs. Executives who wish to challenge foreign ownership on security grounds must now ensure their actions are transparent and strictly within the bounds of their fiduciary duties, or risk facing multi-million pound liability claims.