Adamson had originally been appointed to referee Saturday’s Heineken Champions Cup, Round 6 fixture between Lyon and Northampton Saints, and he has been replaced by Dan Jones (Wales) for the Pool 1 match at Matmut Stadium de Gerland.

Jones had originally been appointed to referee Saturday’s Challenge Cup, Round 6 fixture between Pau and Leicester Tigers, and he has been replaced by Ben Whitehouse (Wales) for the Pool 5 match at Stade du Hameau.

Heineken Champions Cup, Round 6 – Saturday, 18 January
Pool 1: Lyon v Northampton Saints (14.00)
Referee: Dan Jones (Wales); Assistant Referee 1: Aled Evans (Wales); Assistant Referee 2:
Wayne Davies (Wales); TMO: Sean Brickell (Wales)

Heineken Champions Cup, Round 6 – Sunday, 19 January
Pool 5: Toulouse v Gloucester Rugby (16.15)
Referee: Mike Adamson (Scotland); Assistant Referee 1: Sam Grove-White (Scotland); Assistant Referee 2: David Sutherland (Scotland); TMO: Neil Paterson (Scotland)

Challenge Cup, Round 6 – Saturday, 18 January
Pool 5: Pau v Leicester Tigers (14.00)
Referee: Ben Whitehouse (Wales); Assistant referee 1: Rhys Jones (Wales); Assistant referee 2: Ben Breakspear (Wales); TMO: Brian MacNeice (Ireland)

Andrew Brace is not now available to referee Sunday’s Heineken Champions Cup, Round 6 fixture between Toulouse and Gloucester Rugby. Brace has been replaced by Scotland’s Mike Adamson for the Pool 5 match at Stade Ernest Wallon.