Billy Vunipola hopes to be fit for World Cup despite knee operation

Billy Vunipola has undergone a minor operation on his injured knee but expects to be fit for the Rugby World Cup.

The England isn't among a 36-player squad named by head coach Steve Borthwick for their third World Cup training camp at The Lensbury Resort in south-west London.

"The medical team are positive about my prospects and I understand exactly what needs to be done over the next few weeks," said Vunipola.

The line-up is the same as last week's camp with the exception of Will Joseph and Beno Obano, who both miss out. Players from Premiership finalists Sale and Saracens have not been included, but are expected to be included after their five-week rest period finishes next week.

"I’m pleased with the progress that’s been made over the last two weeks and we look forward to another productive training camp at the Lensbury," said Borthwick.

"There’s still a long way to go until we are ready for a World Cup but each day we take another step forward."

Ollie Chessum, Luke Cowan-Dickie, Ollie Lawrence and Jack Walker all remain with their team-mates as they continue their rehabilitation from injury.

England will take on Wales in Cardiff on 5 August, with Borthwick due to name his 33-strong squad for the World Cup in France two days later. They will also take on Ireland in a warm-up game at the Aviva Stadium on Saturday 19 August.

England training squad:

Backs – H Arundell (London Irish), D Care (Harlequins), J Cokanasiga (Bath), F Dingwall (Northampton), T Freeman (Northampton), J Marchant (Harlequins), J May (Gloucester), A Mitchell (Northampton), C Murley (Harlequins), G Porter (Leicester), H Slade (Exeter), F Smith (Northampton), M Smith (Harlequins), F Steward (Leicester), J Van Poortvliet (Leicester), A Watson (Leicester), B