ICRF only heated plasmas in the JET tokamak show distinct structures in the toroidal rotation profile, with regions where dw/dr > 0 when the minority cyclotron resonance layer is far off-axis. The rotation is dominantly co-current with a clear off-axis maximum. There is only a slight difference between a high field side or a low field side position of this resonance layer: the off-axis maximum in the rotation profile is modestly higher for the high field side position. This is in contrast to the predictions of theories that rely mainly on effects arising from ICRF-driven fast ions to account for ICRF-induced plasma rotation. The differences due to the direction of the antenna spectrum (co- or counter-) are small. A more central deposition of the ICRF power and operation in H-mode both lead to more centrally peaked profiles. Strong MHD modes break the rotation and lead to overall flat rotation profiles.