Jonathan Powell The Trusted Adviser Shaping Britain’s Global Agenda
3 min read
How Keir Starmer’s national security adviser became the most influential figure in UK foreign policy
Jonathan Powell once Tony Blair’s chief of staff, has reemerged as one of the most influential figures in British politics. Appointed by Prime Minister Keir Starmer as his National Security Adviser (NSA), Powell’s reach now extends across the world from Washington to Beijing and Gaza. Insiders reveal that Starmer considers him the only person he truly trusts on international affairs, often deferring to Powell’s judgment on critical global issues.
From Blair’s Ally to Starmer’s Strategist
Powell’s return to the heart of government marks a full circle moment in his political journey. During his time under Tony Blair, he helped negotiate the Good Friday Agreement, a cornerstone of peace in Northern Ireland. Now, he brings decades of diplomacy and strategic insight to Starmer’s administration. Drawing on lessons from history, Powell has warned leaders against surrounding themselves with yes men a philosophy that underscores his pragmatic and independent style.
Guiding the UK Through Global Challenges
Since assuming his post less than a year ago, Powell has influenced Britain’s response to the wars in Ukraine and Gaza, while strengthening ties with the United States and navigating delicate talks with China. His work has earned him a reputation as Starmer’s chief envoy and principal architect of the UK’s foreign policy direction. According to one government source, Powell is “by the Prime Minister’s side in all pivotal international moments.”
Defending His Integrity Amid Controversy
Despite his growing stature, Powell has not escaped criticism. He recently faced political scrutiny over the collapse of a trial involving two British men accused of spying for Beijing. Some speculated about his involvement in the case, but Downing Street strongly denied any interference. Security Minister Dan Jarvis defended Powell in Parliament, emphasizing his integrity and value to the administration. Starmer, keen to protect his most trusted aide, refused to let political attacks weaken his position.
Behind-the-Scenes Diplomatic Mastermind

Those who have worked with Powell describe him as intelligent, calm, and deeply strategic a diplomat who thrives in complex negotiations. He reportedly played a key role in the recent Gaza ceasefire, working closely with U.S. envoy Steve Witkoff to broker peace. Witkoff praised Powell’s “incredible input and tireless efforts,” comparing his diplomatic approach to the one that led to the Good Friday Agreement decades ago.
Balancing an Expanding Portfolio
Powell’s broad portfolio, from national security to international diplomacy, has sparked concern about potential overextension. To ease his workload, the government has appointed Barbara Woodward, former UK ambassador to the UN and China, as his deputy. Her experience will complement Powell’s role, ensure continuity while allowing him to focus on high-stakes missions abroad.
A Different Kind of Adviser
Unusually, Powell serves as a politically appointed adviser, not a civil servant a distinction that grants him flexibility to shape and coordinate international dialogue. His reputation as the “dean of European NSAs” underscores his standing among global peers. Unlike traditional bureaucrats, Powell regularly engages with external experts, blending official insight with independent thought to craft well-rounded policies.
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Facing Parliamentary Accountability
Powell’s unique position has raised questions about transparency. Critics argue that his political status shields him from parliamentary scrutiny. However, ministers have reached a compromise, agreeing that Powell will appear before a closed-door select committee next month. His calm response to controversy reflects his resilience; colleagues describe him as “unflappable” even in the face of mounting criticism.
Legacy of a Reluctant Public Figure
Powell himself once wrote that advisers should “stay in the backroom” and let elected officials take the spotlight. Yet his growing influence suggests the opposite his strategic mind and diplomatic finesse have placed him at the forefront of British foreign policy. Whether behind the scenes or in the headlines, Jonathan Powell remains one of the most powerful and steady hands guiding Britain’s global path.