  We present the results of millimetre (33 and 35 GHz) and centimetre (2.1, 5.5
and 9.0 GHz) wavelength observations of the neutron star X-ray binary Circinus
X-1, using the Australia Telescope Compact Array. We have used advanced
calibration and deconvolution algorithms to overcome multiple issues due to
intrinsic variability of the source and direction dependent effects. The
resulting centimetre and millimetre radio maps show spatially resolved jet
structures from sub-arcsecond to arcminute angular scales. They represent the
most detailed investigation to date of the interaction of the relativistic jet
from the X-ray binary with the young supernova remnant in which it is embedded.
Comparison of projected jet axes at different wavelengths indicate significant
rotation of the jet axis with increasing angular scale. This either suggests
interactions of the jet material with surrounding media, creating bends in the
jet flow path, or jet precession. We explore the latter hypothesis by
successfully modelling the observed jet path using a kinematic jet model. If
precession is the right interpretation and our modelling correct, the best fit
parameters describe an accreting source with mildly relativistic ejecta ($v =
0.5 c$), inclined close to the plane of the sky ($i = 86^{\circ}$) and
precessing over a 5-year period.
