Copper's availability is also a relief for Wales for another reason, team manager Alan Phillips revealing back-up squad scrum-half Martin Roberts had a groin problem last week.

BBC: Cooper released for Wales clash

Stange, meanwhile, witnessed the IT manager's cathartic sense of relief.

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Waterways Operation Manager Matt Carter said the trial would not compromise safety as work would still be carried out by relief staff already used by the agency to provide cover when resident keepers are unavailable.

BBC: Goring Lock