London - Andy Farrell has rejoined England's coaching staff following his departure from Saracens, the Rugby Football Union confirmed on Thursday.
Farrell had been a key part of Stuart Lancaster's interim back-room staff during a successful Six Nations campaign which saw England finish second to Grand Slam champions Wales.
The former dual international had initially decided to remain with Saracens following his work with England before changing his mind at the end of the Premiership season.
"I loved every minute of coaching England and working with Stuart and Graham Rowntree and this group of players in the Six Nations and to get the opportunity to do it permanently is a dream," said Farrell.
"I have watched England in South Africa and I am massively excited about the potential that was clearly evident in the three Tests and midweek matches.
"I had seven very special years with Saracens and the club will always have a fond place in my heart. I am grateful for the help they have given me as a player and a coach and I wish everyone involved the best in the future."
Former England international Mike Catt took Farrell's place on the recent tour of South Africa, and could yet remain as part of a four-man coaching team.
Lancaster meanwhile said he was "delighted" to have secured Farrell's services.
"He is a special coach and an individual and the way this team has developed is a testament to the foundations that we laid in the Six Nations," he said.