The 2018 Premiership Rugby Sevens Series would be the eighth rugby unionsevens competition for the twelve clubs who compete in the 2018–19 Premiership Rugby clubs. It was also the second to feature the new format in which all twelve Premiership Rugby teams feature together in one venue over two days.
The competition would be held at Franklin's Gardens for the second successive year on 27 and 28 July 2018.
The twelve teams were split into four groups – A, B, C & D. Each team in the group played each other once, to World Rugby Laws of the Game – 7s Variations.
Based on the result, teams received:
4 points for a win
2 points for a draw
1 bonus point for a loss by seven points or less
1 bonus point for scoring four or more tries in a match
Following all matches in each group, the winner and runner-up in each group progressed to the quarter-finals. The winners of each quarter-final qualified for the cup semi-finals, with the losers eliminated. Thereafter, competition was a simple knockout bracket, with the winner of the cup final being declared the series winner. The third placed team in each pool compete in the plate competition.
Green background progresses to the quarter-finals and may progress to cup. White background will compete in plate competition. Updated 27 July — source: Premiership Rugby
Green background progresses to the quarter-finals and may progress to cup. White background will compete in plate competition. Updated 27 July — source: Premiership Rugby
Green background progresses to the quarter-finals and may progress to cup. White background will compete in plate competition. Updated 27 July — source: Premiership Rugby
Green background progresses to the quarter-finals and may progress to cup. White background will compete in plate competition. Updated 27 July — source: Premiership Rugby
The four pool winners played a quarter-final against the runners-up in a 1 v 8, 2 v 7, 3 v 6 4 v 5 format. The winner of these quarter-finals competed in the cup competition, while the losers were eliminated. The third placed team in each pool competed in the plate competition.
England