Kirwan remains at Warriors
Kirwan, who has made 24 appearances for Warriors since joining in 2015, has been a regular member of the first-team squad over the past 12 months.
After impressing in Warriors’ European Challenge Cup campaign, Kirwan was rewarded with his Premiership debut for the club in February 2016 and later scored his maiden club try in a crucial home win over Sale Sharks just a week later.
The 25-year-old previously played at London Welsh, whom he helped gain promotion to the Premiership in 2013/14, scoring eight tries in 24 appearances.
Named Supporters Club Player of the Year that season, he also captained the side in their 2014/15 Premiership campaign.
Head Coach Carl Hogg said: "We’re delighted Carl has signed a new deal with the club.
“He shows tremendous professionalism and despite not being a regular in the side when he first arrived at Sixways, Carl used the resource around him to develop and ultimately earned his place in the first team.
"He has a fantastic work-rate and we’re looking forward to helping him try and reach the top of his game in the coming seasons,"
Kirwan added: "I’ve really enjoyed the last two seasons at Sixways as part of what is an exciting squad and a great bunch of lads.
"The club is moving in the right direction and I want to help us try and progress as a team and work our way up the Premiership table,"
