LONDON — UK consumer spending fell on an annual basis for first time in four years as inflation driven by the Brexit vote pushes up prices, according to payment card company Visa. It measured that real consumer spending on Visa debit, credit, and pre-paid cards in May was 0.8% lower than in the same month last year. The figures indicate that Britain's sluggish economic growth in the first quarter — when it grew at the slowest rate in the G7 group — continued into the second quarter of the year.