Fiji, the current overall leaders, arrive in London having triumphed in Vancouver, Hong Kong and Singapore.

The Olympic gold medallists will take a huge step towards clinching the overall crown should they reign supreme during the two-day event at Twickenham Stadium, which begins tomorrow and concludes on Sunday (June 3).

The top four teams - Fiji, South Africa, New Zealand and Australia - are separated by just 37 points.

The destination of the overall title is likely to become much clearer following the conclusion of the London Sevens, with the series scheduled to conclude in Paris next week. 

Fiji have been placed in Pool A along with New Zealand, Argentina and Scotland, who have won the previous two editions of the tournament in the English capital.

"We're a new group this season, there's a lot of young players who will be playing at the Twickenham tournament for the first time and we'll be focusing on the processes we need to put in place to perform at our best," Scotland head coach John Dalziel said.

"Groups don't come much harder, we're up against three of the top six teams in the world but we're fully focused on game one.

"We've looked at the opposition but we've also looked at ourselves and coming out of Singapore the big focus has been on performing more consistently and if we do that we can really challenge these teams."

Pool B includes Australia, Wales, Spain and Ireland, while hosts England will face Kenya, the United States and France in Pool C

Reigning series champions South Africa have been drawn in Pool D with Canada, Russia and Samoa.