1999–2000 ISL season

The group winners from the BNL groups and the best runner-up entered the knock-out stage in a preliminary challenge round qualifier with the winners progressing to the challenge round to meet the fourth placed teams from the ISL group stage.

The winners of the challenge rounds entered the quarter-finals with the top three teams from each ISL group.

Peterborough Pirates vs Fife Flyers Basingstoke Bison vs Hull Thunder Nottingham Panthers vs Cardiff Devils Manchester Storm vs Sheffield Steelers Newcastle Riverkings vs Bracknell Bees London Knights vs Ayr Scottish Eagles Manchester Storm vs Cardiff Devils Bracknell Bees vs London Knights The final took place at Sheffield Arena between Manchester Storm and London Knights.

In a repeat of the previous season's Challenge Cup final, Sheffield Steelers took on the Nottingham Panthers and won the competition.

The top two teams from each playoff group qualified for the finals weekend.