Oil Prices Jump 5% and Box In Healey’s First Budget

Brent crude jumped 5% to $105.3 a barrel on Thursday, 8 October, as Gulf platforms shut in and tanker attacks rose in the Strait of Hormuz. UK 10-year gilt yields reached 5.527%, their highest since July 2007, and December West Texas Intermediate gained 5% to $92.70.

The oil print lasted a session. The gilt move is what John Healey, the chancellor, now has to take into his first budget on 28 October, because a dearer barrel is already feeding inflation bets and the cost of government debt.

Brent Jumps 5% as Two Supply Shocks Hit at Once

The $105.3 handle was the highest since 29 September. It arrived on the same day United Kingdom Maritime Trade Operations reported a tanker struck by projectiles off Qatar, and as Hurricane Isaias forced a much larger shut-in of U.S. offshore crude than the first evacuations on 7 October.

Stocks followed the bond sell-off. Japan’s Nikkei fell 1.4% and South Korea’s Kospi dropped 2.6%, while the Stoxx Europe 600 lost 0.9% and the FTSE 100 slipped 0.4% in early London trading.

THE THURSDAY MARKET PRINT

• Brent: Up 5% to $105.3 a barrel, the international benchmark’s highest since 29 September.
• UK 10-year gilt: 5.527%, up more than 7 basis points, the highest since July 2007 on LSEG data.
• UK 30-year gilt: 6.047%, the highest since 1998.
• U.S. 10-year Treasury: 5.331%, up 5 basis points.

French 10-year yields rose 6 basis points to 4.931%, just behind the 4.994% print they had touched the previous week, and German 10-year yields added 2 basis points to 3.504%. Yields rise when bond prices fall, so the same oil shock that lifted Brent cheapened the debt governments still have to sell.

1.28 Million Barrels a Day Sit Idle in the Gulf

Isaias formed in the Gulf of Mexico on 7 October and was a hurricane by the next morning. The National Hurricane Center’s 10 a.m. CDT advisory on 8 October put the center at 23.7 north, 90.2 west, about 380 miles south of the mouth of the Mississippi River, with maximum sustained winds of 85 mph and a central pressure of 975 mb. The 10 p.m. CDT bulletin that night raised winds to 105 mph and placed the storm 260 miles south of the river mouth. The forecast called for landfall along the U.S. northern Gulf Coast late on 9 October or early on 10 October, with a hurricane warning from Ocean Springs, Mississippi, to the Bay/Gulf County line in Florida and storm surge of 5 to 7 feet from Ocean Springs to Indian Pass, Florida.

Shell said it was evacuating all staff and shutting production at its Mars, Olympus, Ursa, Vito and Appomattox assets, and had already moved non-essential workers off Stones. About 150 people live and work on the Mars platform in the Gulf of America in ordinary times. Chevron started shut-in procedures at four of the nine Gulf facilities it operates and left the other five running. Harbour Energy said it was cutting output at selected sites, and BP began taking non-essential workers off platforms.

The official tally moved far faster than a typical precautionary shutdown. Operator reports to the Marine Minerals Administration as of midday on 7 October showed 511,619 barrels a day of oil offline, 25.08% of Gulf output, with 350.25 million cubic feet a day of gas, 16.37%, and eight platforms evacuated. By 11:00 a.m. CDT on 8 October the same agency, using reports from 12 companies, estimated 1,282,879 barrels a day of oil, or 62.89% of current Gulf oil, and 1,127 million cubic feet a day of gas, 57.35%.

GULF SHUT-INS, 24 HOURS APART

Those barrels come back after inspections if the kit is undamaged, which is why some traders still treat a Gulf hurricane as a few lost days rather than a lasting hole in supply. The 24-hour jump from 25.08% to 62.89% still ended any claim that the storm was only a forecast. WTI’s smaller absolute price, $92.70 against Brent at $105.3, fits that short-outage reading even as the official shut-in share more than doubled.

A War-High Week of Tanker Attacks

The U.S.-Israeli war with Iran began on 28 February and is in its eighth month. UKMTO said on 8 October that a tanker had been hit by several projectiles 51 nautical miles north of Madinat ash Shamal, on Qatar’s north coast, with casualties reported. Maritime security sources identified the vessel as the Antigua and Barbuda-flagged chemical tanker Acers and said injuries were minor. Clearwater Dynamics, part of Pole Star Global, said the strike raised the prospect of a wider combat area on approaches to Qatar, Bahrain, Saudi Arabia, Kuwait and Iraq.

That hit sat inside the heaviest week of tanker attacks since the war started. Three maritime security sources counted at least 12 attacks on oil, LNG and LPG tankers around the strait in the week to 5 October. India’s foreign ministry said 12 crew were injured on 5 October after a strike on the Panama-flagged Aframax tanker On Peace. Kpler said only seven commodity vessels passed through the strait on 6 October, the lowest since 23 July, and that crude crossing the waterway fell 27% from the wartime high of the previous week to at least 10.1 million barrels a day. Before 28 February, about 125 large commercial ships used the strait each day.

THE WEEK THE WATERWAY TIGHTENED

1. 28 February 2026: U.S. and Israeli strikes open the war with Iran, and Hormuz traffic later falls far below the pre-war run of about 125 large commercial ships a day.
2. 5 October 2026: On Peace is struck in the strait; India’s foreign ministry says 12 crew are injured.
3. 6 October 2026: Kpler counts seven commodity vessels through Hormuz, the lowest since 23 July, and crude flows of at least 10.1 million barrels a day.
4. 8 October 2026: UKMTO reports the Acers strike off Qatar, and Iran warns that any attempt to open routes it has not authorised will be treated as hostile.

Exports from the wider Middle East have at times held up by moving more crude on routes that avoid the strait, so a lower transit count is not the same thing as barrels vanishing. The freight and insurance bill still rises when projectiles are hitting tankers at a war-high weekly pace, and that bill is what reaches pumps and gilt yields even when some oil still sails.

Why Gilt Yields Are at a 19-Year High

Ten-year gilts are the maturity that covers a large share of Britain’s new borrowing. At 5.527% they are at a 19-year high, and the 30-year line at 6.047% has not been seen since 1998. Diesel at UK pumps hit £2 a litre in early October, so the inflation channel is already visible on the forecourt, not only in the futures pit.

10-YEAR GOVERNMENT YIELDS ON 8 OCTOBER

LSEG data put an 86% chance on a Bank of England rate increase in November, up from 83% earlier in the 8 October session. Huw Pill, the Bank’s chief economist, said central banks need to work on controlling inflation. Megan Greene, a member of the Monetary Policy Committee, said UK wages could grow by around 3.5% in 2027, a pace she called worrying. UK swaps have priced more than 100 basis points of Bank increases by the end of 2027.

Whatever the stance of fiscal policy, it must be credible and be seen as such by financial markets.

Andrew Bailey, Governor of the Bank of England, speaking in Istanbul

Bailey, talking at a conference in Istanbul, also said monetary policy requires “an unwavering commitment to returning inflation to target.” He was speaking as Healey prepares the 28 October budget, after the chancellor had already met economists who work for gilt-edged market makers to test sentiment. Bank of America economists estimated the budget could add £15 billion of public borrowing in the current financial year and again in 2027/28. Matthew Ryan, head of market strategy at Ebury, said gilts could come through intact if the Treasury leans on spending restraint and targeted tax rises rather than extra borrowing or looser fiscal rules.

Trump Rules Out Strikes Before November 3

Two administration officials said the White House had asked the Pentagon to develop strike options against Iranian targets that could be used before the 3 November midterms, with U.S. Central Command compiling the plans. The size and targets, and whether any strike would go ahead, were still being debated. Advocates of a limited operation conceded it would not, on its own, bring Iran to talks, restore safe transit through Hormuz, or cut gasoline prices before election day. A Republican familiar with the deliberations said, “It would make the president look like he got a win and that gas prices would start going down.” A White House official said Trump “has all options available at any time.”

Later on 8 October Trump closed the near-term military path in public. He wrote that Washington was “having productive discussions with the Islamic Republic of Iran” and that the United States “will not be attacking Iran at any time prior to the midterm elections to be held in the United States on November 3rd.” He said the blockade of Iranian ports would stay in force. Officials have described five earlier proposals for major operations against Iran or the Houthis that he had already vetoed, and a Camp David meeting last Friday on a short, intense campaign lasting about three days. Israeli elections are scheduled for 27 October, a week before the U.S. vote.

WHAT WE KNOW

• The oil move: Brent rose 5% to $105.3 on 8 October on Hormuz attacks and the Gulf shut-in, not on bombs that have already fallen.
• The presidential line: Trump has now said there will be no U.S. attack on Iran before 3 November, while leaving later options open.
• The physical squeeze: 1,282,879 barrels a day of Gulf oil were shut in by 11:00 a.m. CDT on 8 October, and tanker attacks in the week to 5 October were the highest of the war.

WHAT IS UNCONFIRMED

• Landfall damage: Isaias still had to come ashore late on 9 October or early on 10 October; how long platforms and plants stay offline depends on wind, surge and inspections.
• The talks: Trump called discussions with Tehran productive; Iran’s atomic chief said the country would not abandon enrichment or hand over its uranium stockpile.
• The budget arithmetic: Healey has not yet set the tax and spending numbers that gilt investors will judge on 28 October.

The strike-options leak was the headline that hit screens first. The barrels that actually went missing on 8 October were in the Gulf of Mexico, and the attacks that actually rose were in and around Hormuz. Those two do not need a new U.S. raid to keep oil expensive into the UK budget.

A 20% Fuel Surcharge on UK Inland Haulage

A.P. Moller-Maersk said on 8 October it was raising its emergency fuel surcharge to 20% from 12 October on inland transport in the UK and Ireland, and that it would keep reviewing the charge. That is the same cost pass-through the carrier has already been running on European store-door cargo. A 29 September notice set an emergency inland fuel surcharge across the Nordic region from 30 September, which Maersk tied to higher fuel costs from the blockage of Middle East supply. Electric trucks and rail were exempt.

MAERSK INLAND FUEL CHARGES ALREADY ON THE BOOKS

• UK and Ireland: Emergency fuel surcharge rises to 20% from 12 October on inland export collections and import deliveries.
• Denmark: 14% on store-door shipments from 30 September.
• Sweden: 12% from 30 September, later cut to 10%.
• Estonia: 24% from 30 September, later cut to 20%.
• Canada: 24% inland fuel surcharge from 1 November on eligible drayage.

Container rates are not gilt yields, but they are how $105.3 oil leaves the futures screen. A 20% inland surcharge on UK haulage sits on top of £2 diesel and an 86% November rate-hike probability, which is the chain Healey has to budget against.

Healey’s October 28 Budget Meets Higher Debt Costs

Healey set 28 October for the fiscal statement, a month earlier than last year, to cut the time markets spend guessing. He now walks in with 10-year borrowing at 5.527% and 30-year borrowing at 6.047%, after a 5% jump in Brent that was driven by barrels already taken off in the Gulf and by tankers already being hit in the Gulf and Hormuz.

Trump’s 8 October pledge removes one near-term military catalyst before 3 November. It does not restart 1,282,879 barrels a day of Gulf oil, and it does not reopen a strait that handled seven commodity ships on 6 October. The budget will be read against those facts, and against Bailey’s test that the plan has to look credible to the people who buy the gilts.

Disclaimer: This article is news reporting and analysis of market moves, official shut-in figures and public statements. It is for information only and is not investment, trading, tax or financial advice, and it should not be used as a basis to buy or sell oil, bonds, currencies or related funds. Readers who are considering any financial decision should consult a qualified independent financial adviser or licensed broker who can assess their own circumstances. Oil prices, gilt yields, hurricane damage estimates and budget measures can change quickly, and the figures here reflect the official and market sources cited as of 8 and 9 October 2026.