Fenny Compton has a (listed) building called the Woad House -- presumably, the plant woad was in times past, treated there to make dye. Have mentioned the following, previously on this game -- just find it really "neat": the last place in Britain where woad was grown on a genuinely commercial scale, was Algarkirk in Lincolnshire (near Spalding). This operation came to an end in 1932.