Also from google books (via @sveden), the Books Ngram Viewer: search results for "bike polo" in books, 1700-2008
@Chuckles started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Also from google books (via @sveden), the Books Ngram Viewer: search results for "bike polo" in books, 1700-2008