Ronan has performed as a bandleader throughout the UK including gigs at the London Jazz Festival, Ronnie Scott's, Jazz in the Round, Cadogan Hall, Pizza Express Live and Kansas Smittys. Internationally he has led bands at festivals such as Jazz Juniors in Poland and Nica and Estella Jazz in Spain.
As a sideman Ronan has performed at the Royal Albert Hall, the London Stadium, the Southbank Centre, the Jazz Cafe, Total Refreshment Centre. Shambala, Kendal Calling and King's Place including performances with many bands including Join the Din, Adam Teixeira's Group Field, OK Aurora, Backbeat Soundsystem, Dizraeli, the Alex Mendham Orchestra, Naná Y La Esencia and Waaju. He has played internationally with many projects in India, Germany, France, Italy, Switzerland, the USA, Ireland and elsewhere around the globe.