Martin began his rallying career in 2001 co-driving at a national level in the UK. With
Matthew Wilson in 2004, he finished as second outright co-driver in the British Rally Championship (BRC) in the
Ford Focus RS. After the 2004 season, Martin was accepted into the MSA British Rally Elite Scheme, a specialist training scheme for young British rally drivers. In 2005, Martin was involved in a serious accident on the opening round of the BRC, the Rally of Wales, and was airlifted to hospital. Later that year he achieved his first international win on the Trackrod Rally with Wilson. The team also finished first on the Colin McRae Stages Rally. In 2006, Martin, with Scottish driver
Barry Clark in the
Ford Fiesta ST, scored third place in the Fiesta Sporting Trophy International (FSTi) series and third place in the S1600 category of the BRC. The following year he achieved his first win in an international series in the FSTi with Clark, and with
Mark Higgins he was placed overall third in the FIA
Production World Rally Championship. Throughout the period 2008-2011, Martin co-drove with Matthew Wilson in the Ford Focus RS (2008-10) and Ford Fiesta RS (2011), competing in the full WRC series. The pair achieved seventh place in the overall classification in 2009 and again in 2011, when they were placed fourth in the Repco
Rally Australia, his best WRC result. Martin participated in only two WRC events in 2012, then in 2013, competed as co-driver with Sheikh
Khalid Al-Qassimi in the
Citroen DS3. The team took part in 7 WRC events, and in five Middle East Rally Championship (MERC) events, in which they were placed second overall. At the end of 2013, Martin had competed in 82 WRC rallies. He stood 13th in the IRDA (International Rally Drivers Association) ranking of co-drivers, with 2844 points, making him the highest-placed British co-driver. In 2014 he and
Craig Breen won the
Acropolis Rally in Greece - removed that year from the list of FIA championships – driving the
Peugeot 208 T16, and the Ravens Rock Rally in Ireland driving the Ford Fiesta RS. In 2019, Martin co-drove
Elfyn Evans with
M-Sport World Rally Team with which they achieved two third places as their best results. Martin followed Evans to the
Toyota team in 2020 and won his first WRC rally in
Sweden, followed by a win in the Rally of Turkey. Two more wins followed in 2021, in addition to five second place finishes, leading to a second consecutive runner-up spot in the co-drivers' championship. Following a disappointing 2022 season, Martin and
Evans ended their near 2 year win drought win at the
2023 Rally of Croatia. ==Other activities==