The last of the six English places in next season's Heineken Cup tournament will be settled at Twickenham on Saturday when Gloucester and Saracens clash in the Zurich Wildcard final (1.00 pm).
And the No 1 and No 2 English rankings will be determined later on in the afternoon when Leicester Tigers and London Wasps collide in the Zurich Premiership final (3.30 pm).
Four French clubs - Biarritz Olympique, Bourgoin, Stade Francais Paris and Toulouse - are safely through but the remaining three places and all the rankings are still in the melting pot.
The Italian qualifiers will be determined on the weekend of 21 / 22 May following their Championship semi-finals. The 24th place in the tournament will be settled on 29 May when Cardiff Blues travel to meet the third placed Italian team in a one-off decider.
The confirmed qualifiers for the 2005 / 2006 Heineken Cup are:
ENGLAND: Leicester Tigers, London Wasps, Sale Sharks, Bath Rugby, Leeds Tykes.
FRANCE: Biarritz Olympique, Bourgoin, Stade Francais Paris, Toulouse.
IRELAND: Munster, Leinster, Ulster.
SCOTLAND: Edinburgh Rugby, Glasgow Rugby.
WALES: Neath-Swansea-Ospreys, Newport-Gwent Dragons, Llanelli Scarlets
