The 1991 British League Division Two season (sponsored by Sunbrite) was contested as the second division of Speedway in the United Kingdom. The league had been renamed from the National League. The season saw one of the rare occasions that speedway operated a promotion/relegation system.

Summary

Terry Russell and Ivan Henry purchased Arena Essex Hammers from Chick Woodroffe and they built a new team that were dominant, winning 21 of their 22 league matches, winning the Knockout Cup and claiming the fours championship held at the East of England Arena on 21 July. Hackney Kestrels reverted to a previous name Hackney Hawks but withdrew in July, ten league matches into the season.

Final table

British League Division Two Knockout Cup

The 1991 British League Division Two Knockout Cup sponsored by Phonesport, was the 24th edition of the Knockout Cup for tier two teams. Arena Essex Hammers were the winners of the competition. First round Quarter-finals Semi-finals

Final

First leg Second leg Final tied 90–90, replay required

Final replay

First leg Second leg Arena Essex were declared Knockout Cup Champions, winning on aggregate 100–80.

Riders' Championship

Jan Stæchmann won the Riders' Championship. The final sponsored by Jawa Moto & Barum was held on 14 September at Brandon Stadium.

Fours

Arena Essex Hammers won the fours championship final, held at the East of England Arena on 21 July. Final

Leading averages

Riders & final averages

Arena Essex Hammers Edinburgh Exeter Glasgow Hackney (withdrew from league) Long Eaton Middlesbrough Milton Keynes Newcastle Peterborough Rye House Sheffield Stoke