The 1991 British League season was the 57th season of the top tier of speedway in the United Kingdom and the 27th known as the British League.
Wolverhampton Wolves won the league for the first time in their history. The club which was first founded in 1928 had only ever won the Provincial Midland League in 1962 and the Provincial League in 1963. They were led by their American star Sam Ermolenko, who became the first rider to push Hans Nielsen from the top of the averages after eight consecutive years at the top. The Wolves team relied on two more American riders, Ronnie Correy and Sam's younger brother Charles Ermolenko, in addition to Englishman Graham Jones to seal the title from Bradford. Bradford gained consolation by winning the Knockout Cup, led by English international pair Simon Wigg and Gary Havelock.
Wimbledon Dons started the season and managed to complete their Gold Cup fixtures but only ran until June before withdrawing from the league. The entire team was relocated to Arlington Stadium and raced as the Eastbourne Eagles for the remainder of the season.
<small>M = Matches; W = Wins; D = Draws; L = Losses; Pts = Total Points</small>
The 1991 British League Knockout Cup was the 53rd edition of the Knockout Cup for tier one teams. Bradford Dukes were the winners.
First round
Quarter-finals
Semi-finals
Final
First leg
Second leg
Bradford Dukes were declared Knockout Cup Champions, winning on aggregate 97-83.
North Group
South Group
North
South
Final
Berwick won 93âÂÂ87 on aggregate.
Sam Ermolenko won the British League Riders' Championship, sponsored by Dunlop Tyres. It was the held at Odsal Stadium on 20 October.
Belle Vue
Berwick
Bradford
Coventry
Cradley Heath
Eastbourne/Wimbledon
Ipswich
King's Lynn
Oxford
Poole
Reading
Swindon
Wolverhampton