Born in Ipswich, Glyn joined Norwich as a trainee but failed to break into the first team. He joined Rotherham where he converted from an attacking role into a midfielder. He made 16 appearances for Rotherham scoring once but has since departed from Millmoor. According to the Pink Un he later spent some time with Colchester United before joining King's Lynn in the summer of 1997. Non League Monthly also reports his signing for King's Lynn but claims that Glyn was with Chelmsford City. As the Rothman's Football Yearbook 1997-98 does not record any matches by Glyn with Colchester, it seems likely that he was with Chelmsford.

Glyn expressed a desire to leave King's Lynn at the end of January 1998 as he was not assured a first team place. He held talks with Ryman Division Two side Braintree but the money offered was considerably less. A loan deal was discussed but King's Lynn manager Peter Morris would not approve such a deal. He fought his way back into the Linnets side until new manager Gary Mills informed Glyn in October 1998 that his services were no longer required. The Pink UN reported that Glyn was being chased by Diss Town, Fakenham, Ipswich Wanderers and Woodbridge of the Jewson Eastern Counties League as well as Braintree from the Ryman League. As Glyn has just started his own haulage business, he was seeking a club that can match the wages received at King's Lynn in order to support his new venture in its infancy.

Glyn joined the multitude of former Norwich City youngsters at Diss Town in mid November 1998. His teammates included fellow former Linnets Coren Hardy and Matthew Wright. Glyn transferred to his hometown in the summer of 2001 to join Ipswich Wanderers and on to Clacton in December 2001. Glynn transferred to Stowmarket Town in the summer of 2002.

Although he later retired, he returned to football in the summer of 2005 to join Ridgeons League newboys Debenham.