Wales back Liam Williams says his switch to Saracens from Scarlets is motivated by an ambition to win more trophies.
Mako Vunipola returns from injury to stake a claim for an England return, but it is not enough as Gloucester beat Saracens.
Saracens sign hooker Tom Lindsay from Gloucester on a short-term deal to cover for the injured Scott Spurling.
Ryan Mills kicks 24 points to earn Worcester a shock first Premiership win over Saracens since November 2012.
Audio & Video
Near the halfway stage of the 2016-17 season, BBC Sport's Jeremy Guscott assesses the sides vying to be Premiership champions.
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