ANSWERS:

greater london - essex - east sussex - lancashire - devon - cornwall - gloucestershire - norfolk - northumberland - rutland

cars - beatles - suzi quatro - nilsson - bowie - hawkwind - simon and garfunkel - zz top - sam cooke - kraftwerk

rihanna/katy perry - affleck/day lewis - beckham/gerard butler - brosnan/cranston - cameron/trudeau

​joy division - buzzcocks - libertines - wonder stuff - big country - alice cooper - black sabbath - faces/rod stewart - deep purple [each has been a support act to next act]