Rugby World Cup 2011: Wilkinson says he never stop improving

England's Jonny Wilkinson says he never stops improving his game, telling BBC Radio 5 live: "I feel like I've moved forward every time I've touched a ball."

The veteran fly-half and centre also says he is "grateful" for the opportunity to shine at a fourth World Cup and believes the recent win over Ireland in Dublin was a great morale booster as the squad begins to prepare in New Zealand.