Th e le a d e r s hi p c o m p o n e n t of Kelly's M o bilis a tio n Th e o ry : c o n t ri b u tio n, t e n sio n s, li mi t a tio n s a n d fu r t h e r d e v elo p m e n t D a rlin g t o n, RR h t t p:// dx. doi.o r g/ 1 0. 1 1 7 7/ 0 1 4 3 8 3 1X1 8 7 7 7 6 0 9 Ti t l e Th e le a d e r s hi p c o m p o n e n t of Kelly's M o bilis a tio n Th e o ry : c o n t ri b u tio n, t e n sio n s, li mit a tio n s a n d fu r t h e r d e v elo p m e n t A u t h o r s D a rli n g t o n, RR Typ e Articl e U RL This ve r sio n is a v ail a bl e a t : h t t p:// u sir.s alfo r d. a c. u k/id/ e p ri n t/ 4 6 3 0 2/ P u b l i s h e d D a t e 2 0 1 8 U SIR is a di git al c oll e c tio n of t h e r e s e a r c h o u t p u t of t h e U niv e r si ty of S alfo r d. W h e r e c o py ri g h t p e r mi t s, full t e x t m a t e ri al h el d in t h e r e p o si to ry is m a d e fr e ely a v ail a bl e o nli n e a n d c a n b e r e a d , d o w nlo a d e d a n d c o pi e d fo r n o nc o m m e r ci al p riv a t e s t u dy o r r e s e a r c h p u r p o s e s . Pl e a s e c h e c k t h e m a n u s c ri p t fo r a n y fu r t h e r c o py ri g h t r e s t ri c tio n s. Fo r m o r e info r m a tio n, in cl u di n g o u r p olicy a n d s u b mi s sio n p r o c e d u r e , pl e a s e c o n t a c t t h e R e p o si to ry Te a m a t: u si r@ s alfo r d. a c. u k . Taylor and Moore, 2015). Yet the nature and process of leadership and its relationship to collective mobilisation has remained relatively understudied and inadequately theorised by industrial relations (and social movement) researchers generally. In the 1970s and 1980s several highly insightful sociologically-inspired case studies provided rich narrative accounts of workplace industrial relations that confirmed the centrality of shop stewards' leadership to the dynamics of collective action (Armstrong et al., 1981; Batstone et al.,