By David Milliken and Jonathan Cable
LONDON (Reuters) - British retail sales rose the most in over a decade in the second quarter despite a drop in spending in June, official data showed on Thursday, giving the Bank of England some reassurance shoppers have largely shaken off a sluggish start to 2018.
Retail sales volumes in June alone were down 0.5 percent from May - at the low end of economists' forecasts in a Reuters poll - as the World Cup kept some shoppers out of stores after extremely rapid growth during the previous two months.
Sales for the second quarter as a whole were 2.1 percent higher than the first three months of the year, the biggest calendar-quarter increase since the first quarter of 2004.
But financial markets honed in on the weaker June figure, which pushed sterling below $1.30 for the first time since September 2017, after a week in which the British currency has been battered by political disputes over Brexit.
"An August rate hike is in the balance. Whether or not one is delivered, the trajectory thereafter will be extremely shallow," said Tom Stevens, an investment director at fund manager Fidelity International.
Most economists polled by Reuters at the start of the week predicted that the BoE would raise rates on Aug. 2 for only the second time since the financial crisis.
But the dip in sales in June - which follows soft wage growth and inflation figures earlier in the week - revived some investors' concerns that they may see a repeat of May, when the BoE held off a widely expected rate rise due to a string of soft data in the run-up to its policy meeting.
Retail sales growth and Britain's economy overall slowed in the first three months of 2018, due to heavy snow as well as ongoing pressures from high inflation and the anticipation of next year's Brexit, and the BoE said in May it would delay raising rates until it was sure that growth was back on track.
June retail sales were 2.9 percent higher than a year earlier versus forecasts of a 3.7 percent rise, slowing from 4.1 percent in May, which had been the fastest annual growth rate since November 2016.
The ONS said the strong data for the retail sector - which makes up just 5 percent of the economy - would probably add 0.1 percentage points to second-quarter GDP growth.
Earlier this month BoE Governor Mark Carney said the economy appeared to be growing as forecast - bolstering market expectations for a rise - though his deputy Jon Cunliffe, who opposed the last rate rise in November, said wages were growing a bit less than the BoE had forecast.
Overall economic growth in Britain this year is likely to be the weakest since 2012, according to the International Monetary Fund, which cut its forecast to 1.4 percent on Monday.
Cunliffe's view got a boost on Tuesday, when fresh data showed earnings rising at the slowest rate in six months. And on Wednesday inflation unexpectedly held steady, in part because heavy discounting of clothing negated the effect of higher fuel prices.
The latest retail sales data showed clothing sales suffered from the heat, but food and drink retailers did well as shoppers took advantage of unusually hot weather.
"Warm weather encouraged shoppers to buy food and drink for their BBQs," ONS statistician Rhian Murphy said.
"However ... continued growth in food sales (was) offset by declining spending in many other shops as consumers stayed away from stores and instead enjoyed the World Cup and the heatwave," Murphy added.
Online clothing retailer ASOS
But traditional clothing retailers such as Marks & Spencer
(Reporting by David Milliken; Editing by Hugh Lawson)