Martyn is a BP Portrait Award nominated artist, he graduated from Brunel University in 2004 and he lives and works in Buckinghamshire in the UK

His painting of the actor and Musician Matt Berry was shortlisted for the 2017 BP Portrait Award and selected for exhibition at the National Portrait Gallery in London. The painting is currently on show at the Scottish National Portrait Gallery in Edinburgh. Martyn has also been shortlisted for the 2018 Derwent Art Prize for drawing.

As an artist, Martyn is mostly focused in calm and reflective portraiture, but his practise also covers a diverse range of subject matter. His work is gentle, figurative and naturalistic, with a strong importance placed on both emotional insight and draughtsmanship. He has developed a distinctive intricate style that is both crystalline and delicate, and that rewards repeated viewing. Martyn is equally happing working in paint or pencil.

His work was nominated for the National Open Art Award in 2016 and 2017, and for the Jackson's Art Printing Prize in 2018

Martyn was selected as one of the 'Artist and Illustrator Magazine' 2018 Artists of the Year. The nominated painting was exhibited at the Mall Galleries in London.

He regularly exhibits work in Bedfordshire, Buckinghamshire and in London. He is currently working on a number of commissioned portraits.