Edinburgh and Glasgow will play respectively in the Pool 1 and in the Pool 5.
Gary Mercer - Glasgow Warriors Assistant Coach
"We have been drawn in a tough Pool with Toulouse and Bath, but we were also drawn in a tough Pool last year and proved ourselves to be a good team at home. There will be some good battles within the group- I am really excited about the draw."
Andy Robinson - Heineken Cup winning coach at Bath 10 years ago and now Head Coach at Edinburgh.
"We are pleased with the group. We will be able to test ourselves against the champions of England, London Wasps, and the Magners League champions, Leinster. We look forward to welcoming back both teams to Murrayfield.
"Having Castres in the Pool will be new territory. Overall, it is a strong Heineken Cup draw for Edinburgh and we are looking forward to the challenge ahead."