The M25 motorway marks the western boundary of Coinbrook, Berkshire with which London village that may also be considered a hamlet?
M25 motorway The M25 or London Orbital Motorway is a 117 mi motorway that encircles almost all of Greater London, England (with the exception of North Ockendon), in the United Kingdom. An ambitious concept to build four concentric ring roads around London was first mooted in the 1960s. A few sections of the outer two rings were constructed in the early 1970s, but the plan was abandoned and the sections were later integrated to form a single ring which became the M25, aka London Ring Road, finally completed in 1986.
Penn, Buckinghamshire Penn is a village and civil parish in the Chiltern district in Buckinghamshire, England, about 3 mi north-west of Beaconsfield and 4 mi east of High Wycombe. The parish, containing Penn village and the hamlets of Beacon Hill, Penn Street, Knotty Green and Forty Green, plus Winchmore Hill, covers 3,991 acres (1615 ha).