The final was contested by Leeds and St. Helens at Wembley.

Leeds beat St. Helens on Saturday 13 May 1978 in front of a crowd of 96,000.

[1] The winner of the Lance Todd Trophy was Saints forward, George Nicholls.

[2] This was Leeds’ eleventh Cup final win in fifteen appearances and their second in successive years.

[3] The first round consisted of all 30 professional rugby league clubs, plus two amateur teams, Dewsbury Celtic and Pilkington Recs.