Vyvyan will lead Sir Clive Woodwards scratch team before a 72,000-strong crowd at Twickenham looking to press his claims for full international recognition.

Still uncapped, the athletic forward was an unused bench replacement for Englands Test against Argentina in 2002 and was part of the side which helped beat New Zealand Barbarians last December.

Skipper of the shadow England side which competed in last years Churchill Cup in Canada and trusted with the leadership duties during the same tournament this summer, Vyvyan has rarely let Woodward down.

But with the likes of Lawrence Dallaglio, Chris Jones, Joe Worsley and Martin Corry ahead of him in the pecking order, the back rower has yet to make his presence felt in the Test arena.

Sundays traditional fixture against the star-studded Barbarians, however, will give him the perfect opportunity to shine against quality opposition whose initial squad totalled 1,317 caps.

And Vyvyan has warned Bob Dwyers men that his team-mates will also be out to prove themselves to Woodward and his coaching lieutenants Andy Robinson and Phil Larder.

This a huge opportunity for all of the players to show what theyre made of. Its a very young squad and all of us are out to show what we can do on the big stage, he said.

You only have to look at the Barbarians squad to realise its going to be a huge challenge for us. Theyre a great side but that just makes it even more exciting.

Well be playing against some of the biggest names around so its daunting to a certain extent. But we really want to test ourselves against that calibre of player.

If we acquit ourselves it can only have good implications for our international futures.