Match officials to January 20

George Clancy: In charge of Leicester v Toulouse showdown

It's the final round of Heineken Cup and Amlin Challenge Cup action, as we unveil the referees set to take charge this weekend.

With four teams safely through to the knock-out stages of the Heineken Cup, there are still four places to be won along with qualification for three clubs for the Amlin Challenge Cup quarter-finals.

Heineken Cup

Munster vs Racing Metro 92 at Thomond Park
Referee: Wayne Barnes (England)
Assistant referees: JP Doyle, (England) Robin Goodliffe (England)
Television match official: David Grashoff (England)

Saracens vs Edinburgh at Vicarage Road
Referee: Jérôme Garces (France)
Assistant referees: Sébastien Cloute (France), Jérôme Lamirand (France)
Television match official: Jean-Marie Piraveau (France)

Leicester Tigers vs Toulouse at Welford Road
Referee: George Clancy (Ireland)
Assistant referees: Mark Patton (Ireland), Olly Hodges (Ireland)
Television match official: Simon McDowell (Ireland)

Benetton Treviso vs Ospreys at Stadio Di Monigo
Referee: Greg Garner (England)
Assistant referees: Luke Pearce (England), Paul Dix (England)
Television match official: Trevor Fisher (England)

Connacht vs Zebre at Sportsground
Referee: Pascal Gauzere (France)
Assistant referees: Jean-Luc Rebollal (France), Cyril Lafon (France)
Television match official: Daniel Irazoqui (France)

Biarritz vs Harlequins at Stade Aguiléra
Referee: John Lacey (Ireland)
Assistant referees: Paul Haycock (Ireland), Michael Black (Ireland)
Television match official: Seamus Flannery (Ireland)

Glasgow Warriors vs Northampton Saints at Scotstoun
Referee: Leighton Hodges (Wales)
Assistant referees: Gwynn Morris Wayne Davies (Wales)
Television match official: Huw Lewis (Wales)

Castres vs Ulster at Pierre Antoine, Castres
Referee: Nigel Owens (Wales)
Assistant referees: Sean Brickell Jon Mason (Wales)
Television match official: Derek Bevan (Wales)

Scarlets vs Clermont Auvergne at Parc & Scarlets
Referee: Neil Paterson (Scotland)
Assistant referees: David Changleng (Scotland), Adrian Graves (Scotland)
Television match official: Jim Yuille (Scotland)

Exeter Chiefs vs Leinster at Sandy Park
Referee: Romain Poite (France)
Assistant referees: Christophe Berdos (France), Eric Soulan (France)
Television match official: Bernard Dal Maso (France)

Cardiff Blues vs Sale Sharks at Arms Park, Cardiff
Referee: Peter Fitzgibbon (Ireland)
Assistant referees: Eddie Hogan-O'Connell (Ireland), Will O'Connor (Ireland)
Assessor: Andy Clift (Scotland)

Montpellier vs Toulon at Stade Yves du Manoir
Referee: Alain Rolland (Ireland)
Assistant referees: Stuart Gaffikin (Ireland), Kevin Beggs (Ireland)
Television match official: Marshall Kilgore (Ireland)

Amlin Challenge Cup

London Irish vs Bordeaux-Bègles at Madejski Stadium
Referee: David Wilkinson (Ireland)
Assistant referees: Barrie O' Connell (Ireland), Ken Henley-Willis (Ireland)
Assessor: Michel Lamoulie (France)

Gloucester vs Mont-de-Marsan at Kingsholm
Referee: Dudley Phillips (Ireland)
Assistant referees: John Carvill (Ireland), David Keane (Ireland)
Assessor: Clayton Thomas (Wales)

Worcester Warriors vs Bizkaia Gernika RT at Sixways
Referee: Cédric Marchat (France)
Assistant referees: Arnaud Blondel (France), Stéphane Boyer (France)
Assessor: Gary Welsh (England)

Perpignan vs VEA Femi-CZ Rovigo at Aimé Giral
Referee: Neil Hennessy (Wales)
Assistant referees: Martyn Lewis Barrie Gregory (Wales)
Television match official: Nigel Whitehouse (Wales)

Mogliano vs Bayonne at Stadio Maurizio Quaggia
Referee: Ian Davies (Wales)
Assistant referees: James Jones Chris Williams (Wales)
Timekeeper: Valter Borghetto (Italy)
Assessor: Rosanno Facioli (Italy)

Newport Gwent Dragons vs London Wasps at Rodney Parade
Referee: Marius Mitrea (Italy)
Assistant referees: Stefano Pennè (Italy), Stefano Marrama (Italy)
Television match official: Alan Falzone (Italy)

Bath vs Bucharest Wolves at Recreation Grounds
Referee: Laurent Cardona (France)
Assistant referees: Salem Attalah (France), Mourad Zitouni (France)
Assessor: Michael Carroll (Ireland)

Agen vs Cammi Calvisano at Stade Armandie
Referee: Ian Tempest (England)
Assistant referees: David Rose (England), Nigel Carrick (England)
Assessor: Bertie Smith (Ireland)

I Cavalieri Prato vs Grenoble at Stadio Enrico
Referee: Leo Colgan (Ireland)
Assistant referees: Kieran Barry (Ireland), Barry O'Keeffe (Ireland)
Assessor: Gianni Romano (Italy)

Stade Français vs London Welsh at Stade du Hainaut, Valenciennes
Referee: Andrew McMenemy (Scotland)
Assistant referees: Peter Allan (Scotland), Bob Nevins (Scotland)
Television match official: Iain Ramage (Scotland)