LONDON, July 9 (Reuters) - Britain’s economy grew by a slower-than expected 0.8% in May from April, official data showed on Friday. A Reuters poll of economists had pointed to month-on-month growth of 1.5% in gross domestic product. The figure for May from the Office for National Statistics was lower than April’s 2.0% growth when restrictions eased for non-essential retailers, hairdressers and pubs and restaurants that could serve customers outside. But it was faster than typical pre-pandemic, month-on-month rises in GDP. (Reporting by William Schomberg and David Milliken) Our Standards: The Thomson Reuters Trust Principles.