John Hampden (1819-1891) vigorously promoted the flat earth idea in England. He founded the Truth-Seeker's Oracle and Scriptural Science Review in 1876. Hampden was a Biblical literalist and based his views on scripture ( “No one can believe a single doctrine or dogma of modern astronomy, and accept Scriptures as divine revelation.”) although he defended them through observation and experiment.
In 1870 Hampden made a bet with naturalist Alfred Russel Wallace on the outcome of a test of the flatness of water in the Old Bedford Canal. Both sides claimed the test confirmed their view. After the experiment, Hampden and Wallace engaged in a bitter public feud.