His family have issued the following statement:
Stephen joined the Royal Marines in 1994 and was promoted to the rank of Major in 2001. He was passionate about his life in the Royal Marines and proud to be a Marine.
One of four sons, he loved his family. Stephen and Lucy had been married for 18 months and were thrilled at the prospect of the arrival of their first child later this year.
Stephen’s family, colleagues and wide circle of friends are devastated by his death which leaves a great void.
The family has requested that their privacy be respected at this distressing time.