One match each Sunday was televised by the BBC and the idea was a commercial success, though it had its critics among cricket's "traditional" supporters.
One effect of the Sunday League was a reduction in the number of matches played by each team in the County Championship from 28 to 24.
John Hampshire scored a century on his Test debut versus West Indies at Lord's.
Other leading batsmen were Basil Butcher, Mushtaq Mohammed and Barry Richards, who all averaged over 50.
These were Mike Procter, Derek Underwood, Tom Cartwright and Don Wilson, who all averaged less than 17.50.