On Monday (June 22, 2026), another landmark power transition drama unfolded in front of 10 Downing Street, as Labour Prime Minister Keir Starmer officially announced his resignation as both Prime Minister and leader of the Labour Party. This political crisis, brewing for months, finally came to an end, temporarily halting the internal divisions that had been eroding British politics. The Labour Party immediately launched a new leadership election to elect a successor. Starmer will remain Prime Minister, fully responsible for the day-to-day operations of the government, ensuring a smooth transition of executive power and preventing a governance vacuum. At this crucial juncture, ten years after the Brexit referendum, Starmer's departure is not merely a political event, but rather the inevitable result of a decade of continuous turmoil, economic problems, and internal party divisions in Britain. It also foreshadows a new Prime Minister who will bear a far greater economic and social responsibility than his predecessor.



The collapse of the ruling foundation: the double pressure of public opinion defeat and internal party split.

Two years ago, Starmer was at the peak of his political career. In the 2024 UK general election, he led the Labour Party to a landslide victory, securing a massive majority of 174 seats in Parliament, achieving the highest electoral record in the party's century-long history. At the time, it was widely believed that Starmer could end the Conservative Party's decade-long governance slump, repair the fractured British society since Brexit, and revitalize the sluggish economy. However, in less than 24 months, a precipitous drop in approval ratings, a crushing defeat in local elections, and a collective attack from party members—multiple pressures piled up, completely exhausting Starmer's foundation for governance. The UK local elections in May of this year became the first major blow, with the Labour Party losing a large number of municipal seats in England and Wales, as grassroots voters expressed their dissatisfaction with current policies through their votes. Subsequent polls further reflected public opinion: a national poll released on Friday, June 1st, showed that 52% of the British public explicitly supported Starmer's resignation, while only 35% were willing to continue trusting his leadership. This complete loss of public support rendered Starmer without any grassroots support to continue governing.

Beyond the collapse in public opinion, the core internal divisions within the Labour Party were the primary reason that forced Starmer to resign. During his time in power, Starmer and Chancellor of the Exchequer Rachel Reeves' austerity and balanced fiscal policy consistently faced strong opposition from left-wing MPs and grassroots unions, exacerbating the left-right divide within the party. The welfare reform plan was also embroiled in controversy, with many lower-income voters worried that welfare cuts would increase their financial burden. The appointment of Peter Mandelson as ambassador to the United States further ignited internal debate, as Mandelson's past association with notorious sex offender Jeffrey Epstein led many Labour MPs to publicly question the government's hiring standards, further eroding party consensus. Amidst these intertwined internal conflicts, an increasing number of Labour backbenchers publicly questioned Starmer's ability to lead the party in the next general election. This ongoing internal pressure caused Starmer to lose the support of the party's core members, ultimately leaving him with no choice but to resign to resolve the crisis.

Succession landscape clear: Burnham leads Labour Party in leadership race

With Starmer's announcement of his resignation, the landscape of the Labour Party leadership contest quickly became clear, with former Greater Manchester Mayor Andy Burnham emerging as the most competitive successor. Burnham won by a large margin in the local by-election on June 18th, demonstrating strong grassroots appeal and garnering significant support from working-class voters in the north. On Monday morning, former Health Secretary Wes Streatine publicly endorsed Burnham's candidacy, bolstering his political standing. Burnham himself has also clearly stated his intention to formally participate in the Labour Party leadership transition process. Currently, no major contenders have announced their candidacy. If no further challenges are initiated, the election process for the new party leader is expected to be completed quickly within weeks, and Burnham will most likely enter 10 Downing Street without hindrance, becoming the seventh British Prime Minister in the ten years since Brexit.

A Decade of Political Turmoil: Brexit Aftermath Leads to Continued Governance Instability

Since the 2016 Brexit referendum, the UK has seen seven prime ministers in just ten years: David Cameron, who pushed for Brexit and left office in disgrace; Theresa May, who struggled to advance Brexit negotiations but faced internal party opposition; Boris Johnson, who rose to power through populism and ultimately resigned amidst scandals; Alex Truss, whose 45-day term triggered a market crash; Rishi Sunak, who briefly stabilized the situation but was unable to reverse the economic downturn; and now, Keir Starmer, who resigned hastily after only two years in office. Such a high frequency of leadership changes is extremely rare among major Western developed countries, directly exposing the deep-seated structural contradictions Brexit has sown in the UK. Brexit disrupted the UK's long-standing stable economic, labor, and border systems. Problems such as foreign trade frictions, labor shortages, and regional development imbalances continue to fester. Frequent government changes make it difficult to implement long-term, consistent policies; each prime minister overturns parts of the policies of their predecessors, further amplifying downward economic pressure and creating a vicious cycle.

Financial Market Reaction: Investors' Risk Aversion Highlights Economic Concerns

Following the announcement of Starmer's resignation, the UK financial markets reacted swiftly, directly reflecting global investors' risk aversion to uncertainty surrounding British politics. In early trading on the day the news broke, the pound fell 0.19% against the dollar, trading at $1.3207; the yield on 10-year gilt bonds, representing the UK's long-term financing costs, fluctuated slightly, remaining at a high level of 4.8452%. Comparing this to previous market movements, it's clear that after Burnham's landslide victory in the by-election, gilt yields briefly rose, reflecting that the market had already anticipated the risk of a change of government. The core anxiety of global investors lies in the UK's deep-seated fiscal and economic weaknesses.

Peel Hunt's chief economist, Callum Pickering, points out that the UK government has maintained a high level of borrowing for years, resulting in a persistently high total public debt. Even compared to other developed economies in the G7, the UK's fiscal deficit and debt pressure remain relatively high.

Objectively speaking, Starmer's tenure was not without economic achievements. The government pushed for several new bilateral trade agreements, and the country's real GDP grew moderately by 1.5%, mitigating to some extent the impact of the trade contraction caused by Brexit. However, long-standing economic weaknesses are difficult to repair in the short term: the UK has long held the highest borrowing costs among G7 economies, and its inflation rate has consistently been higher than the other six countries for the past decade, with a persistent cost-of-living crisis plaguing ordinary people. High inflation raises daily expenses, high financing costs increase the dual pressure on businesses and government debt repayment, and economic growth is weak. This series of real problems is the key reason why the capital market has always been bearish on the UK's long-term prospects. The Prime Minister's sudden resignation has further amplified market wait-and-see sentiment, and investors can only wait for a clear fiscal agenda from the new government to reassess the valuation of UK assets.

New Governor's Challenges: Burnham Faces Dual Tests on Finances and People's Livelihoods

Upon taking office, Burnham will face the unavoidable challenge of fiscal balance from the outset. Balancing financial market confidence with the demands of Labour's grassroots voters will be his biggest test in the first phase of his term. Previously, Burnham publicly criticized the British economy for being "held hostage" by bond market rules, advocating for a moderate relaxation of fiscal constraints and increased investment in people's livelihoods and public services. However, his recent public statements have clearly shifted towards a more moderate and conservative stance, signaling a proactive effort to appease the capital markets. This change in position is driven by the pressure of real-world governance. Continuing the stringent austerity measures of the Starmer era would strongly dissatisfy the Labour left, unions, and grassroots voters, exacerbating internal party divisions. Conversely, significantly increasing fiscal spending and relaxing debt controls would drive up bond yields, increasing national debt servicing costs and increasing the risk of inflation. Both approaches have drawbacks, and Burnham must find a middle ground to reshape market expectations regarding the sustainability of British public finances.

A Turning Point in National Development: The UK Urgently Needs to Solve Multiple Governance Dilemmas

Looking ahead, the UK is currently at its most critical policy turning point in the decade since Brexit. The governance shortcomings resulting from frequent changes of prime minister, a persistently weak economy, a fractured party structure, and discontented public demands have all piled up before the new government. Burnham must address four core issues simultaneously upon taking office. First, he must continuously suppress inflation and introduce a long-term stimulus package to drive sustainable economic growth and alleviate the pressure of the cost of living for the public. Second, he must optimize the fiscal debt structure, reduce long-term borrowing costs, narrow the gap in financing costs with other G7 countries, and rebuild the UK's attractiveness to international capital. Third, he must restore public trust in the government by implementing concrete policies addressing pressing issues such as energy, housing, and healthcare to dispel long-standing discontent at the grassroots level. Fourth, he must reconcile the left-right factions within the Labour Party, unify party policy consensus, build a stable governing team, and lay the foundation for a full five-year parliamentary term.

Market Outlook: 100-Day New Deal Becomes a Key Indicator for the UK Economy

The capital markets have already set clear benchmarks for evaluating Burnham's first 100 days in office, with the pound sterling exchange rate and the yield on 10-year gilt bonds becoming two core indicators for measuring the new government's effectiveness. If Burnham can implement stable, consistent, and predictable medium- to long-term fiscal policies, reasonably manage debt levels, and promote a recovery in the real economy, market confidence will recover simultaneously: the pound sterling will appreciate, long-term government bond yields will decline, the financing pressure on the government and businesses will be alleviated, and the economy is expected to emerge from its slump of slow growth. Conversely, if internal party divisions are irreconcilable, fiscal policies will waver, and inflation and growth cannot be effectively curbed, negative market sentiment will continue to fester, the pound sterling will likely continue to depreciate, bond yields will remain high, and high interest payments will further squeeze government budgets for public welfare and infrastructure, creating a vicious cycle of "high debt—high costs—low growth."

Looking back at the decade-long Brexit saga, Starmer's hasty resignation is merely another microcosm of the long-standing political and economic imbalances in Britain. Continuous changes of government have deprived Britain of a stable policy environment, hindering the systematic resolution of structural economic problems and causing a prolonged stagnation in the quality of life for its citizens. Burnham's rise to power represents a new opportunity for British politics to learn from past mistakes. The policy signals he releases in his first 100 days will directly determine the trajectory of the British currency and bond markets in the coming years, and will also profoundly impact whether the British economy can emerge from its prolonged slump ten years after Brexit. For the British public and global investors, the only shared expectation now is that the new government can break the cycle of policy turmoil of the past decade, resolve the long-standing fiscal, social, and political crises with stable and pragmatic governance plans, and end the ongoing political infighting and economic downturn following Brexit.