By Ana Nicolaci da Costa
LONDON (Reuters) - Britain's economy slowed in April and may stall as consumers worry about June's EU referendum, reaching levels at which in the past the Bank of England began to consider rate cuts, a survey of the dominant services industry showed.
If last month's weakness persists, economic growth may be just 0.1 percent in the second quarter, down from 0.4 percent in the first three months of this year, financial data company Markit said on Thursday.
That would be the weakest quarterly reading since late 2012.
Markit chief economist Chris Williamson said the deterioration in April pushed the surveys into territory which "has in the past seen the Bank of England start to worry about the need to revive growth" by easing monetary policy.
The services sector grew at its lowest rate in more than three years, according to Markit's activity index, which fell to 52.3 from 53.7 in March, below the lowest forecasts in a Reuters poll of economists.
Companies said uncertainty about the referendum and weakness in the global economy were worrying the main drivers of Britain's recovery: its consumers.
"In combination with the weaker-than-expected manufacturing index earlier in the week that points to a pretty subdued Q2 GDP reading," Alan Clarke, strategist at Scotiabank said, predicting a less marked slowdown to 0.2 percent in the second quarter.
"The (BoE) has told us that it will be a little less sensitive than usual to the hard data given the EU referendum uncertainty. Nonetheless, a ... GDP number of 0.2 percent quarter-on-quarter (or lower) is likely to test the patience of some of the doves."
Sterling fell while gilts showed little reaction to the data.
Britain's economy has outpaced much of the rest of the rich world over the past three years. But it has been showing signs of slowing since late last year.
Economists generally believe a Brexit vote on June 23 would deal at least a short-term blow to the economy, possibly prompting the BoE to cut already record-low interest rates or expand its bond-buying program.
But it would also probably weaken the pound, adding to inflation and making it more difficult for the BoE to act.
Thursday's survey showed growth in input costs paid by service companies were the highest in over two years in April, suggesting that a gradual rise in inflation will continue.
Williamson said the early timing of this year's Easter holiday might also have contributed to the slowdown.
Job growth was also at its slowest in April since August 2013, reflecting a recent weakening in the labor market as a whole.
Britain's economy increasingly relies on services, with manufacturing and construction failing to contribute to growth for much of the past year. Surveys of those sectors published this week suggested that trend was likely to continue.
Manufacturing output unexpectedly shrank in April while construction output grew at its slowest rate in nearly three years.