The British pound steadied on Monday as investors closely awaited a key economic policy speech later in the day from Andy Burnham, the frontrunner to become the UK's next Prime Minister.
With Burnham widely expected to enter Downing Street within weeks, his governing approach, particularly regarding fiscal and devolution plans, is becoming a pivotal variable shaping the direction of UK financial markets.
The pound has declined 1.7% so far this month and is on track for its largest monthly drop since March.
A stronger US dollar, boosted by a provisional peace deal in the Iran conflict and a market reassessment of US interest rate prospects, has climbed to near a one-year high, keeping sustained pressure on sterling.
During Monday's session, sterling edged up 0.08% against the dollar to 1.3213, remaining near seven-month lows.
Political uncertainty has further dampened sentiment for the pound since UK Prime Minister Keir Starmer announced his resignation a week ago.
Burnham, who has returned to Parliament, is currently the only publicly declared candidate for the Labour leadership; if no other contenders emerge, he will formally become Prime Minister on July 20.
This makes his speech in Manchester a crucial window for the markets to preview his economic policy framework.
Burnham's Proposed Decade-Long Economic Transformation Plan
According to previews, Burnham will outline a ten-year plan titled "No 10 North," pledging to raise living standards across regions through significant devolution of power.
The plan would grant mayors greater budgetary control over areas currently managed by Whitehall, such as housing, welfare, and education, aiming to "drive good growth in every corner of Britain."
However, what most unsettles the gilt market is Burnham's stance on fiscal discipline.
He is known for supporting more active expansionary fiscal policies, but with the UK's fiscal headroom extremely limited, any significant increase in borrowing or spending could trigger market turbulence.
Burnham has explicitly stated he will adhere to the fiscal rules set by current Chancellor Rachel Reeves, which require day-to-day spending to be covered by taxation and commit to reducing the debt-to-national-income ratio by the 2029-30 fiscal year.
Reeves publicly urged him last week to stick to the current course, stating her economic strategy was "starting to work," while also expressing support for "fiscal devolution."
Nevertheless, some left-wing MPs within the party have publicly called for relaxing these rules to allow for greater spending.
Consequently, Burnham's ultimate choice for Chancellor of the Exchequer has become a key factor influencing market pricing.
Analysts warn against repeating the mistakes of former Prime Minister Liz Truss, whose large-scale, unfunded tax cuts triggered severe turmoil in the gilt market.
David Stritch, a strategist at Caxton, stated bluntly: "Gilt yields have nearly doubled since the pandemic, deficit spending continues, and all of this suggests the last thing needed now is another major spending spree. When the previous government announced ambitious but unfunded policies that deviated from orthodox economic paths, the outcome was a disaster. It would be wise for Burnham to avoid falling into the same trap."
Ed Miliband, Wes Streeting, and Shabana Mahmood are reportedly seen as potential candidates to succeed Reeves.
Concerns over UK fiscal sustainability are already reflected in positioning data.
According to weekly statistics from the US Commodity Futures Trading Commission, investors currently hold net short positions on sterling worth a substantial $8.72 billion, the largest bearish bet since June 2015 and second only to the historical peak of $9.567 billion set in May 2015.
Political uncertainty combined with doubts over fiscal discipline is placing a dual burden on sterling-denominated assets.
Additional Pressures and Political Criticism
Beyond the economic plan, Burnham faces calls to make commitments on defense spending.
A defense investment plan, outlining funding increases over several years, is due to be published before the new Prime Minister takes office.
Former Chief of the Defence Staff Admiral Tony Radakin has publicly called on Burnham to commit to raising defense spending to 3.5% of GDP by 2035, describing the responsibility as akin to that of a "wartime Prime Minister."
However, the opposition has been dismissive of Burnham's upcoming speech.
Conservative Party Chairman Kevin Hollinrake criticized Burnham's "big ideas" as merely "shifting power between politicians" rather than genuinely advancing welfare reform, tax cuts, or securing defense funding.
A spokesperson for the Reform Party mocked the speech as "full of rhetoric but lacking substance," suggesting Burnham was emulating Starmer's style of "all talk and no action."
Liberal Democrat leader Ed Davey also warned that the public's appetite for change and patience are limited, leaving Burnham an "extremely short" window to turn the government's fortunes around.
Upcoming Market Events
Market risk events extend beyond the UK this week.
The US monthly jobs report is due, and new Federal Reserve Chair Kevin Warsh is scheduled to speak publicly on Wednesday at the European Central Bank's annual forum in Sintra, Portugal, where global investors will seek further clues on the path of US monetary policy.
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