Gareth is a qualified secondary school teacher who taught full-time for 5 years in Ysgol Gyfun Rhydywaun (A Welsh language comprehensive school near Merthyr Tudful).

Gareth left full time teaching in 2003 in order to take a Post Graduate course in Jazz and worked part time in Ysgol Gyfun Plasmawr during this time to fund his studies. At present Gareth is working as a part-time music teacher in Ysgol Gyfun Glantaf in Cardiff.

As well as working as a classroom teacher, Gareth is also heavily involved with running music workshops for pupils of all ages. He attended a course for Workshop Leaders at the Guildhall School of Music in London in October 2005 and since then has been recognised by both Guildhall and the Royal Welsh College of Music and Drama as a workshop leader for the national Note 4 Note school workshop project. Gareth is also part of the outreach team from RWCMD who run regular music workshops in local South Wales schools.

Gareth also works regularly at the Wales Millenium Centre where he runs a weekly music workshop for the Urdd (a Welsh language youth group) and helps run music workshops for occasional school visits.

He runs two successful school jazz bands and has managed to win the National Urdd Eisteddfod ensemble competition for the past two years.

Gareth also gives private trombone lessons as well as still occasionally tutoring Maths GCSE and A Level.