LONDON — A man recently arrested on suspicion of spying for China met British lawmakers in the U.K. Houses of Parliament in January and visited at least one other time in the past year, according to two witnesses who spoke with POLITICO. David Taylor, a former Labour adviser, was one of three men arrested earlier this month in connection with Chinese espionage investigations. On Jan. 27, just weeks before his arrest, he attended and spoke at a meeting of the all-party parliamentary group on