Owen Farrell, who completed a ban for a dangerous tackle just in time for the Six Nations, wants England to lead the way in making rugby safer.
The England captain's participation in his side's tournament opener against Scotland on 4 February was thrown into doubt after he was suspended for four weeks for an illegal tackle while playing for club side Saracens earlier this month.
But the ban was reduced to three weeks because the 31-year-old fly-half and centre agreed to complete World Rugby's coaching intervention programme, and he is now available for the match at Twickenham.
He said the programme had been helpful. "What it does do, you look at what you could do better from the situation you were in in the first place, and I've obviously had time to step back and have a look at that and learn from it," Farrell said at the Six Nations launch event in London on Monday.