Doug Christiansen - sacked by Sheffield Steelers towards the end of last season - has resigned from his position as head coach of the Great Britain national side.
The American led the team at last year’s World Championship (Division 1B) in Lithuania, following two years as assistant coach.
He was also part of GB’s bid to reach the Winter Olympics in Sochi, where they just missed out in the final qualifying round last year.
Ice Hockey UK chairman, Jim Anderson, said: “I would like to thank Doug for everything he has done in his time with GB.
“Doug is a highly-respected coach and we are sorry to see him leave.
“He worked hard for the national side and he leaves behind a good GB squad, who can compete for promotion.
“The process begins now to find a new head coach and we hope to make an announcement as soon as possible.”
Christiansen said: “I have greatly appreciated the opportunity to coach the national team and I am proud to have been a member of the coaching staff for the last five tournaments.
“My personal and professional commitments and ambitions are now elsewhere and I believe it is only fair for me to resign as the head coach.
“It was truly an honour to coach the national team and I am proud of our accomplishments.
“The British players are a credit to the country and I enjoyed working with them.
“They gave their all and should be commended for it. I wish the program and the players nothing but success in the future.”