In Pool C, Leinster will meet Biarritz, the side they beat in the quarter final as well as Sale Sharks and Cardiff while Munster are in Pool E, drawn for the second successive year alongside Gloucester with the Italians Benneton Treviso and French side Bourgoin.
Heineken Cup Pools 2003/04.
Pool A. Ulster, Stade Francais /Toulouse, Leicester Tigers, Gwent.
Pool B. Stade Francais/Toulouse, Leeds Tykes, Edinburgh, Neath Swansea Region.
Pool C. Leinster Lions, Biarritz, Cardiff, Sale Sharks.
Pool D. Agen, Northampton Saints, Llanelli, Scottish Borders.
Pool E. Munster, Bourgoin, Gloucester, Benetton Treviso.
Pool F. Perpignan, London Wasps, Bridgend Pontypridd Region, Ghial Amatori & Calvisano