Billy Vunipola sympathises with the plight of England fans scrambling to buy tickets for Saturday's World Cup final as he struggles to source entry to the South Africa clash for his own family.

International Stadium Yokohama hosts a 69,000 sell-out and supporters desperately making late arrangements to be present at the nation's quest to lift the Webb Ellis Trophy for a second time are coming to terms with a match that sold out sixth months ago.

Billy Vunipola and his brother Mako will start the Springboks clash in the pack and have been busy trying to secure tickets on behalf of their extended family - with mixed success.

"Things like the rush for tickets are out of our control," said Billy, the Saracens number eight of Tongan heritage.

"I've got a massive family so I'm dealing with it first hand, but our focus is on the final and how we can best challenge South Africa and win the game.

"When we say family, it's quite a broad statement. My brother deals with it. I feel sorry for him sometimes. He is the admin point so if you want tickets ask my brother."