In November 2014, Kemp joined Capital FM to present Sunday 6–9am. He was promoted to Saturday 5–8pm and Sunday 9pm–12am a year later, where he had the chance to interview artists on his show. In February 2016, Kemp became the new face of The Capital Evening Show, weeknights 7–10pm in addition to his Sunday show. In 2017, Kemp began hosting Capital Breakfast from 6am–10am with Vick Hope across London and Saturday 6am–9am across the Network. As a result, he left the evening show. In 2018, Sonny Jay joined Capital Breakfast full-time as a co-presenter. In 2016, Kemp was The X Factor UK's digital presenter and social media correspondent. He also co-hosted Nick Kicks on Nicktoons. Since January 2017, he has co-presented 2Awesome on ITV2 with Vick Hope. He also presented The Hot Desk on ITV2. From 2 May 2017, Kemp took over Capital FM London's breakfast show with Hope. He narrated Bromans on ITV2 in 2017, in which his father played Emperor. He appeared in an episode of Len Goodman's Partners in Rhyme. He took part in a celebrity edition of First Dates for Stand Up to Cancer in November 2017. In November 2017, Kemp was the backstage reporter on Children in NeedRocks the 80s. On 1 March 2018, Kemp hosted the Global Awards alongside Rochelle Humes and Myleene Klass, and returned to present the 2019 Global Awards. On 8 April 2019, Kemp, Hope and Jay became the hosts of the new Capital National Breakfast. In May 2019, it was announced that he would play in the 2019 edition of Soccer Aid, representing the Rest of the World due to his birth in Los Angeles allowing him to be classed as American. Later that year, he appeared in the Channel 4 reality series Celebrity Gogglebox alongside his father. In 2019, Kemp was a contestant on the nineteenth series of the ITV reality series I'm a Celebrity...Get Me Out of Here! and finished in third place. Kemp has also presented London's New Year celebration show twice in 2017 and 2019 alongside performers Nile Rodgers, Chic and Craig David respectively. In 2020, Kemp co-hosted a Sunday morning programme with his father, titled Martin & Roman's Sunday Best on ITV from 14 June 2020.
