Sterling weakened and investors scaled back their bets on future increases in borrowing costs as consumer price inflation growth came in at its lowest since March 2022, although it remained above the rate in other big, rich economies.

Economists polled by Reuters had mostly forecast a smaller slowdown, to 8.2% in the 12 months to June from May's 8.7%.

The BoE said in May it expected June inflation would fall to 7.9%, moving further away from October's 41-year high of 11.1% but still way above its 2% target.

"The UK still has one of the highest inflation rates of any advanced economy but after today it merely looks bad, rather than a basket case," James Smith, head of research at the Resolution Foundation think-tank, said.

"That is a very welcome improvement."

Sterling was down by more than 0.5% against the U.S. dollar and touched its lowest against the euro since May.

Markets now reckon a quarter-percentage point rise in interest rates on Aug. 3 is likelier than the half-percentage point increase which had been priced in on Tuesday. Bank Rate was no longer seen peaking at 6%. British government bond prices soared and shares in home-builders jumped.

Core inflation - which excludes food, energy, alcohol and tobacco prices and which the BoE uses to gauge underlying price pressures - also dropped, coming in at 6.9% compared with May's three-decade high of 7.1%.

Economists polled by Reuters had expected the core measure of price growth to hold at 7.1%.

FUEL PRICE FALL

Petrol and diesel prices - down a record 23% on a year ago - were the biggest drag on headline inflation, the Office for National Statistics said.

But there were painful increases for other goods and services. Sugar prices rose by 54%, while transport insurance costs were up 48%, the biggest rise since records started in the late 1980s.

BoE Governor Andrew Bailey has faced criticism from investors and former BoE officials after inflation kept climbing higher than expected, despite 13 back-to-back rate increases since December 2021 that have raised the risk of a recession.

Prime Minister Rishi Sunak has promised to halve inflation by the end of 2023 before a national election expected in 2024, a target that finance minister Jeremy Hunt says is challenging.

Responding to Wednesday's data, Hunt said the government and BoE had taken tough decisions to get inflation down. "We're seeing the first fruits of that, but there's a long way to go," he said.

The opposition Labour Party, riding high in opinion polls, has accused Sunak's Conservative Party of presiding over a "mortgage catastrophe" as home-owners see their borrowing costs jump.

Despite June's drop, Britain's inflation rate remains the highest among the world's top seven rich economies. In Western Europe, only Iceland had a higher rate of inflation in June.

WAGE GROWTH

Services prices, also monitored closely by the BoE, rose by 7.2% in annual terms, slowing from 7.4% in the 12 months to May.

There were signs of a weakening of inflation pressure ahead as factory gate prices rose by just 0.1% in the 12 months to June, the lowest reading since December 2020.

Manufacturers' input prices fell by 2.7%, the biggest fall in almost three years.

The Reuters poll of economists had pointed to an increase of 0.5% in output prices and a fall of 1.6% in input prices.

Inflation has fallen more slowly in Britain than in other countries, partly because of the way energy subsidies are repriced every six months. The next reset, which will reflect lower prices, starts on July 1.

Suren Thiru, Economics Director at ICAEW, an accountancy body, said July's inflation rate was likely to slow to below 7%.

The BoE has expressed concern that strong wage growth may keep price growth higher for longer than its forecast for inflation to fall to just over 5% in late 2023 before dipping below its 2% target only in early 2025.

Data released earlier on Wednesday showed pay settlements held at 6% in the second quarter, remaining at the highest level in nearly 32 years.