Gloucester survived Bill Meakes' red card to see off Edinburgh 19-13 and claim Challenge Cup glory at the Twickenham Stoop, reviving their Champions Cup qualification hopes at the expense of Sale and Harlequins.
Scotland captain Greig Laidlaw admits it will feel "a little bit strange" when he goes into European Challenge Cup final battle against his former team.
England international Ben Morgan has delivered an encouraging fitness bulletin as he continues to recover from a season-ending injury and retain the hope of keeping alive his World Cup dream.
Gloucester held off a stern challenge from Exeter to win their European Challenge Cup semi-final 30-19 at Kingsholm and set up a final clash with Edinburgh next month.
Gloucester head coach Laurie Fisher has underlined the magnitude of his team's task against reigning Aviva Premiership champions and runaway leaders Northampton on Saturday.
Wasps continued their impressive Premiership record at the Ricoh Arena as they downed Gloucester 32-21 to claim a fourth maximum points victory of the season.
England number eight Ben Morgan looks set to miss the entire RBS 6 Nations after breaking his leg in Gloucester's Aviva Premiership victory over Saracens on Friday night.
England suffered what appeared to be a major pre-RBS 6 Nations injury scare when number eight Ben Morgan was carried off during Gloucester's dramatic 24-23 Aviva Premiership victory against Saracens at Kingsholm.
Gloucester head coach Laurie Fisher believes his side's failure to convert close games into victories is the main contributing factor to their current Aviva Premiership position of ninth place.
Wasps' recent improvement continued with a win over Gloucester while there were also post-Christmas Aviva Premiership wins for London Irish, Bath, Leicester, Saracens and Northampton.