LONDON--U.K. business investment rose in the three months following the June vote to leave the European Union, official data showed Friday, signaling that uncertainty surrounding Britain's future relationship with the European bloc didn't weigh heavily on business sentiment.

Business investment increased by 0.9% in the July-September period compared with the preceding quarter, the Office for National Statistics said, and stood at GBP44.2 billion ($55 billion), driven by spending on buildings, machinery and equipment. However, compared with the same period last year, it fell by 1.6%.