W.H. Walker and Brothers was a narrowboat builder based in a small town approximately 20 mi northwest of what?
W.H. Walker and Brothers: W.H. Walker and Brothers was a narrowboat builder based in Rickmansworth, England. Rickmansworth: Rickmansworth is a small town in south-west Hertfordshire, England, situated approximately 20 mi northwest of central London and inside the perimeter of the M25 motorway.
central London