In action this weekend

Guinness Pro 12

Munster vs Ulster at Thomond Park
Referee: Ian Davies (Wales)
Assistant referees: Gary Conway (Ireland), Paul Haycock (Ireland)
Television match official: Kevin Beggs (Ireland)
Timekeeper: Dermot Moloney (Ireland)
Assessor: John Sheehan (Ireland)

Leinster vs Ospreys at RDS Arena
Referee: Marius Mitrea (Italy)
Assistant referees: Mark Patton (Ireland), Stuart Gaffikin (Ireland)
Television match official: Alan Rogan (Ireland)
Assessor: Michael Carroll (Ireland)

Glasgow Warriors vs Dragons at Scotstoun Stadium
Referee: Dudley Phillips (Ireland)
Assistant referees: Lloyd Linton (Scotland), Andrew McMenemy (Scotland)
Television match official: Jim Yuille (Scotland)
Assessor: Jim Fleming (Scotland)

Connacht vs Scarlets at Sportsground
Referee: Leighton Hodges (Wales)
Assistant referees: Nigel Correll (Ireland), Brian MacNeice (Ireland)
Television match official: Seamus Flannery (Ireland)
Assessor: Bertie Smith (Ireland)

British and Irish Cup

British & Irish Cup

Cross Keys vs Cornish Pirates
RefereeSean Gallagher (Ireland)
Assistant referees: Simon Rees (Wales), Kelvin Shorte (Wales)

Leinster A vs Carmarthen Quins
Referee: Craig Maxwell-Keys (England)
Assistant referees: John Carvill (Ireland), Gary Glennon (Ireland)
Assessor: Tony Duncan (Ireland)