England international Delon Armitage will leave London Irish for Toulon at the end of the season, the Aviva Premiership club announced today.
The 28-year-old full-back has agreed a two-year deal with Toulon and will link back up with his brothers Steffon and Guy in France.
Steffon joined Toulon from London Irish last year, while Guy announced he was making the same switch last month.
"I feel it's the right time for me to move on at this stage in my rugby career. Irish has been a huge part of my life and it's been a real honour to be a part of. I would also like to thank the supporters and team-mates that I have got to know over the last decade," said Delon Armitage.
"I am looking forward to joining Steffon and Guy at Toulon but my immediate priority is ensuring that London Irish finish the season on a high with two victories."
London Irish are currently 10th in the Aviva Premiership table, five points above Wasps and eight clear of last-placed Newcastle Falcons.
Armitage has made 165 appearances for the club since his debut in 2003, while he has earned 26 caps with England.
London Irish head coach Toby Booth said: "Delon is one of many players who has committed over 10 years' service to this club.
"I wish him and his family the best in the future and thank him for his considerable involvement in London Irish's success in recent times.
"We are sad to see him leave but wish him the very best of luck at Toulon. Personally I hope he regains the form to see him return to international status in the future."
Toulon, who boast the likes of Jonny Wilkinson, Simon Shaw, Matt Giteau, Joe van Niekerk and Bakkies Botha in their squad, are currently third in the Top 14 standings and through to the Amlin Challenge Cup semi-finals, where they will face rival French side Stade Francais later this month.