Margetson was part of the Wales backroom staff for five and a half years working with Gary Speed and then Chris Coleman and helped them to this summer’s Euro 2016 semi-finals. As before, he will combine his international duties with a similar role at Cardiff City.
Notably, Margetson spent three years alongside Allardyce at West Ham United and – working with England goalkeeper Robert Green – helped the London club achieve promotion back to the Premier League in his first season.
During his playing days, Margetson emerged through the youth ranks at Manchester City before establishing himself in the first team. Following a successful career across several clubs he spent five years at Cardiff before hanging up his gloves in 2007 to join the club’s coaching staff.
Margetson said: “This is a great opportunity and I am excited to be working alongside Sam again. I know what he can bring to a squad and also to the coaching staff.
“England have an outstanding crop of goalkeepers playing at the highest level and I am relishing the chance to work closely with them.
“I would also like to thank Tan Sri Vincent Tan, Paul Trollope and Cardiff City for all of their support.”
“Martyn is one of the best goalkeeping coaches around”
Allardyce said: “Martyn is one of the best goalkeeping coaches around and I am delighted we have been able to get him.
“He understands all aspects of a goalkeepers’ role – not just in terms of shot-stopping or how to command an area but also in terms of strength of character for what is a crucial position on the pitch.
“I would like to thank Cardiff for their support with making this appointment.”