Harefield

Harefield is a village in the London Borough of Hillingdon, England, 17 miles (27 km) northwest of Charing Cross near Greater London's boundary with Buckinghamshire to the west and Hertfordshire to the north. The population at the 2011 Census was 7,399. Harefield is the westernmost settlement in Greater London, and lies outside the capital's contiguous built-up area.
Harefield is near Denham, Ickenham, Northwood, Rickmansworth, Ruislip and Uxbridge. Pioneering heart surgery techniques were developed at Harefield Hospital.