England and Bath star Mike Catt will play for London Irish next season.
Catt spent 12 years at Bath
The World Cup winner, capped 62 times for his country, follows Scotland hooker Robbie Russell to the Madejski Stadium in Reading.
"After twelve enjoyable years with Bath, the change will be a challenge, one that I am really looking forward to," said the 32-year-old centre.
Catt, who has also represented the British and Irish Lions, played 227 times for Bath and scored 64 tries.
"This is one of the most exciting signings this club has made in recent times," said Conor O'Shea, managing director of London Irish. "We are delighted that he is joining us in July."
"Mike will add an extra dimension to our squad and to the backs in particular.
"His participation in and experience of the England squad will benefit London Irish."