Complex sentence: Harefield is a village in the London Borough of Hillingdon, England, on a hill, northwest of Charing Cross near Greater London's boundary with Buckinghamshire to the west and Hertfordshire to the north.
Split into simpler sentences: Harefield is a village in the London Borough of Hillingdon in the northwest of Greater London, England. It is situated on top of a hill, northwest of Charing Cross, near the Greater London boundary with Buckinghamshire to the west and Hertfordshire to the north.