Mae Martin yn Aelod Annibynnol o Ymddiriedolaeth GIG Felindre, ymddiriedolwr Ymddiriedolaeth Hamdden Merthyr Tudful, llywodraethwr Coleg Gwent, a llywodraethwr yn ysgol gynradd ei ferch. Mae hefyd yn gwasanaethu ar bwyllgorau archwilio Cyngor Sir Penfro, Cyngor Cyllido Addysg Uwch Cymru a Bristol Community Health. Yn ynad ar hyn o bryd, mae Martin ar y fainc yn y Canolbarth.  Aeth Martin i Ysgol Ramadeg Glynebwy, ac mae ganddo radd BA o Ddwyrain Llundain ac MSc o brifysgolion Dinas Birmingham. Mae'n Gymrodor Sefydliad Siartredig Cyllid Cyhoeddus a Chyfrifyddiaeth ac mae ganddo Gymhwyster y Sefydliad Archwilwyr Mewnol mewn Arweinyddiaeth Archwilio Mewnol. Mae ei yrfa cyllid, risg a llywodraethu corfforaethol yn cynnwys llywodraeth leol, y GIG a Llywodraeth Cymru, cyn iddo ymuno â Chomisiwn Coedwigaeth Cymru fel Cyfarwyddwr Cyllid, a daeth yn Bennaeth Archwilio a Risg wedi creu Cyfoeth Naturiol Cymru.   Cafodd Martin ei fagu yng Nglynebwy ac mae bellach yn byw ym Mhontypridd gyda'i wraig a'i ferch. Mae'n cefnogi tîm rygbi Glynebwy a chriced Morgannwg.
Martin is an Independent Member at Velindre NHS Trust, a trustee of Merthyr Tydfil Leisure Trust, a governor at Coleg Gwent, and a governor at his daughter’s primary school. He also serves on the audit committees at Pembrokeshire County Council, the Higher Education Funding Council for Wales and Bristol Community Health. A serving magistrate, Martin sits on the Mid Wales bench.  Martin attended Ebbw Vale Grammar School, and holds a BA from East London and an MSc from Birmingham City universities. He is a Fellow of the Chartered Institute of Public Finance and Accountancy and has the Institute of Internal Auditors’ Qualification in Internal Audit Leadership. His finance, risk and corporate governance career covered local government, the NHS and Welsh Government, before he joined Forestry Commission Wales as Director of Finance, and became Head of Audit and Risk on the formation of Natural Resources Wales.   Martin grew up in Ebbw Vale and now lives in Pontypridd with his wife and daughter. He is a supporter of Ebbw Vale rugby and Glamorgan cricket.