[1] The title was won by St Austell Gulls.
[2] + withdrew - Norfolk replaced Skegness and took over fixtures A Fixtures B Fixtures The 1998 Conference league Knockout Cup (sponsored by Dunlop) was the first edition of the Knockout Cup for tier three teams.
[5] In 1995 there had been an Academy League Knockout Cup and in 1996 a Conference League Knockout Cup but due to a merger of the British Leagues, both the 1995 and 1996 editions acted as the second tier of British speedway at the time.
First round Semi-finals Steve Bishop won the Riders' Championship.
The final was held on 12 July at the Clay Country Moto Parc in St Austell.