12 Dec, 14:42
Prop Cian Healy is expected to miss the start of the 2014 RBS 6 Nations after undergoing surgery on his injured ankle on Wednesday.
The 12 nations competing are Argentina, Australia, Canada, England, France, Ireland, Italy, Japan, New Zealand, Scotland, South Africa and Wales.
Mike Miller, IRB CEO said: "This tournament is a very important and necessary stepping stone for world rugby, giving young players the opportunity to gain experience on the world stage in readiness for their step-up to full international status.
"We look forward to England hosting the second U21 World Cup, an event which promises to live up to last years high standards and seeing if they emanate last year's host by winning the coveted title."