Newcastle, Exeter, London Irish, Cardiff and Connacht recorded bonus-point wins in the Challenge Cup.
The Exeter Chiefs have secured the future of another key player after Ben White signed a new two-year contract.
Exeter produced a powerful second-half display to win at Connacht and reach the European Challenge Cup quarter-finals.
Exeter have been boosted by the news that three of their forwards have signed new contracts.
Shane Geraghty kicked a last-minute drop goal to give London Irish a 28-26 Aviva Premiership win over Exeter.
Dave Lewis is the latest Exeter player to commit his long-term future to the club by signing a new two-year deal.
David Humphreys lauded Gloucester's character after a thrilling 26-25 victory over Exeter Chiefs.
Gloucester scraped past Exeter by the narrowest of margins as they triumphed 26-25 at Sandy Park on Saturday.
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