Routes examines the development of BBJ through a combination of oral-historical and archival work. In-depth interviews with contemporary participants are set alongside archival sources which include recorded interviews from the British Library’s ‘Oral History of Jazz in Britain’ and documents from the National Jazz Archive. But the project also extends beyond British experience, and acknowledges the Black Atlantic diaspora in the Caribbean, United States and Africa as a crucial source for understanding the routes/roots of BBJ.