Gloucester have announced the signing of Lions captain and South Africa back-row forward Jaco Kriel for next season.
London Irish will make an immediate return to the Championship after Worcester Warriors eased to a crushing victory of Harlequins.
Jarrod Evans kicked 11 points as Cardiff Blues defeated Pau 16-10 to reach the final of the European Challenge Cup.
A third European Challenge Cup crown is a win away for Gloucester after they easily disposed of Newcastle Falcons.
Leicester Tigers' play-off bid suffered an unexpected setback when Northampton Saints pulled off a derby double at Welford Road.
Exeter Chiefs are assured of a top-four finish in the Premiership after scoring six tries in an emphatic win over Gloucester.
The semi-final line-up in the European Challenge Cup is complete, after Gloucester and Cardiff Blues reached the last four on Saturday.
A club-record crowd of 30,174 witnessed Newcastle Falcons win at St James' Park as Toby Flood kicked 20 points against Northampton.
Billy Twelvetrees missed a late conversion attempt as Gloucester's comeback bid came up just short in a Premiership thriller.
The Premiership saw its first draw of the season, while leaders Exeter Chiefs and Bath were winners by a solitary point on Saturday.
Two years after leaving for Gloucester, Matt Scott is to return to Pro14 with hometown club Edinburgh.
Johan Ackermann and son Ruan will face no further police action over a nightclub incident, a decision Gloucester Rugby have welcomed.