“Oddly enough, Everton won the title [in 1914-15] off the back of their away form, winning 25 of their 46 points away from home. The champions having a better away record than home record cannot have happened very often since 1888.”
I raised the issue, so I went to find the answer.
It has only happened on two other occasion – when Huddersfield Town won the title in 1924-25, winning 30 of the 58 points away from home, and in 1988-89, when Arsenal were champions (with Michael Thomas scoring at Anfield with virtually the last kick of the season for a 2-0 win, just enough to pip Liverpool to the title on goal average, both sides having the same goal difference), winning 40 of their 76 points away from home.
Arsenal also won as many points away from home as they did at home when they won the title in 1930-31.
Perhaps not so coincidentally, both the Huddersfield Town side of 1924-25 and the Arsenal side of 1930-31 were managed by the great Herbert Chapman.
In fact, only ten times have clubs finishing in the top 3 won as many or more points away as they did at home:
Three of the ten occurred in 1988-89, with both Arsenal and Forest winning more points away from home. Despite their last-game-of-season defeat at home to Arsenal, Liverpool won as many points at home as they did away.