[3] He made his first List A appearance since his debut season in 1970, playing one match each against Minor Counties South in the Benson & Hedges Cup and Gloucestershire in the Gillette Cup, as well as making five List A appearances in the John Player League.
[6] He also made fifteen List A appearances in 1974, spread across the Benson & Hedges Cup, Gillette Cup and John Player League,[2] scoring 107 runs at a low average of 11.88,[5] with nearly half of his List A runs in that season coming against Worcestershire in the John Player League,[7] which was also his maiden half century in that format.
He also had his first season of note with the ball, with Ellis seeing some success in one-day cricket, with 14 wickets at a bowling average of 29.00, with best figures of 3/22.
[3] His part-time medium pace bowling was also further utilised in this season, with him taking 15 wickets in first-class cricket at an average of 46.80, with best figures of 46.80.
[5] He also saw success with the ball in one-day cricket in 1975, taking 18 wickets at an average of 33.38, with best figures of 3/16.
[8] 1976 was to be Ellis' final season playing first-class and List A cricket for Glamorgan.
He played twenty first-class matches in that season, with his final appearance coming against Kent in the 1976 County Championship.