Match officials to December 16

At Aviva Stadium: Wayne Barnes

There's lots of club action in Europe, with the Heineken Cup and Amlin Challenge Cup featuring the return fixtures of last weekend.

Wayne Barnes will referee the Heineken Cup Pool Five clash between Leinster and Clermont at the Aviva Stadium in Dublin.

Heineken Cup, Round Four

Edinburgh vs Racing Metro 92
Referee: Dudley Phillips (Ireland)
Assistant referees: Stuart Gaffikin (Ireland), Jude Quinn (Ireland)
Television match official: Peter Ferguson (Ireland)

Biarritz Olympique vs Connacht
Referee: Leighton Hodges (Wales)
Assistant referees: Sean Brickell (Wales), Chris Williams (Wales)
Television match official: Gareth Simmonds (Wales)

Ospreys vs Toulouse
Referee: George Clancy (Ireland)
Assistant referees: Peter Fitzgibbon (Ireland), Richard Kerr (Ireland)
Television match official: Kevin Beggs (Ireland)

Benetton Treviso vs Leicester Tigers
Referee: Alain Rolland (Ireland)
Assistant referees: Shaun Gallagher (Ireland), Olly Hodges (Ireland)
Television match official: Marshall Kilgore (Ireland)

Harlequins vs Zebre
Referee: Mathieu Raynal (France)
Assistant referees: Cédric Marchat (France), Stéphane Boyer (France)

Leinster vs Clermont Auvergne
Referee: Wayne Barnes (England)
Assistant referees: Martin Fox (England), Paul Dix (England)
Television match official: Geoff Warren (England)

Exeter Chiefs vs Scarlets
Referee: Romain Poite (France)
Assistant referees: Christophe Berdos (France), Eric Soulan (France)
Television match official: Eric Gonthier (France)

Ulster vs Northampton Saints
Referee: Nigel Owens (Wales)
Assistant referees: Gwyn Morris (Wales), Jonathan Mason (Wales)
Television match official: Derek Bevan (Wales)

Montpellier vs Cardiff Blues
Referee: Greg Garner (England)
Assistant referees: Llyr Apgeraint-Roberts (England), Stuart Terheege (England)
Television match official: Graham Hughes (England)

Castres Olympique vs Glasgow Warriors
Referee: Andrew Small (England)
Assistant referees: Tim Wigglesworth (England), Roy Maybank (England)
Television match official: David Grashoff (England)

Saracens vs Munster
Referee: Pascal Gauzere (France)
Assistant referees: Jérôme Garces (France), Jean-Luc Rebollal (France)
Television match official: Gérard Borreani (France)

Toulon vs Sale Sharks
Referee: John Lacey (Ireland)
Assistant referees: Paul Haycock (Ireland), Brian MacNiece (Ireland)

Television match official: Simon McDowell (Ireland)

Amlin Challenge Cup, Round Four

London Wasps vs Bayonne
Referee: Andrew McMenemy (Scotland)
Assistant referees: Peter Allan (Scotland), Andy Macpherson (Scotland)
Television match official: Iain Heard (Scotland)

Stade Français vs I Cavalieri Prato
Referee: Neil Hennessy (Wales)
Assistant referees: Martyn Lewis (Wales) Barrie Gregory (Wales), Gareth Simmonds (Wales)

Mont-de-Marsan vs Bordeaux-Bègles
Referee: Luke Pearce (England)
Assistant referees: JP Doyle (England), Kevin Stuart (England)

Agen vs Bucharest Wolves
Referee: Ian Tempest (England)
Assistant referees: Sean Davey (England), Steve Lee (England)

London Welsh vs Grenoble
Referee: Marius Mitrea (Italy)
Assistant referees: Giuseppe Vivarini (Italy), Simone Boaretto (Italy)

Cammi Calvisano vs Bath
Referee: Laurent Cardona (France)
Assistant referees: Adrien Descottes (France), Mourad Zitouni (France)

Gloucester vs London Irish
Referee: Neil Paterson (Scotland)
Assistant referees: David Changleng (Scotland), Adrian Graves (Scotland)

VEA Femi-CZ Rovigo vs Bizkaia Gernika
Referee: Leo Colgan (Ireland)
Assistant referees: John Carvill (Ireland), Dave O'Flynn (Ireland)

Perpignan vs Worcester Warriors
Referee: Ian Davies (Wales)
Assistant referees: James Jones (Wales), Greg Morgan (Wales)
Television match official: Nigel Whitehouse (Wales)

Newport Gwent Dragons vs Mogliano
Referee: David Wilkinson (Ireland)
Assistant referees: Eddie Hogan-O'Connell (Ireland), Darragh McCormack (Ireland)
Television match official: Alan Rogan (Ireland)