Example image of eyePlorer eyePlorer map for 'Grand Union Canal': Canals of the United Kingdom England Birmingham Lock (water transport) London Aylesbury Leicester Northampton Slough Wendover Grand Union Canal (old) Erewash Canal Grand Junction Canal Hertford Union Canal Oxford Canal Regent's Canal Coventry Canal Braunston Narrowboat Act of Parliament Duke of Kent River Trent Foxton Locks Watford Locks British Transport Commission British Waterways Gongoozler Old Oak Common Brentford River Brent River Thames West (London sub region) Port of London Canal basin Hanwell Norwood Green Cowley, London Hayes, Hillingdon River Colne, Hertfordshire Southall Uxbridge West Drayton Slough Arm Harefield Rickmansworth River Gade Cassiobury Park Croxley Kings Langley M25 motorway