Jets appear to be fundamentally linked to the accretion process, and have been inferred to exist in all accreting X-ray binary systems. Black hole X-ray binaries show two different types of jets; persistent, partially self-absorbed conical outflows seen at low accretion rates, and the spectacular relativistically-moving knots observed during outbursts. While the bright outbursts have been well-studied in the radio band, much less is known about the properties of the jets at lower accretion rates owing to their inherent faintness. The power liberated by the jet has important implications for the nature of the accretion process at low luminosities. I will present HSA observations of the most luminous black hole X-ray binary in a quiescent (low-luminosity) state, in an attempt to constrain the size and characteristics of the putative jets in this system. While being less powerful than the large outbursts, the long duty cycles mean that such jets can have just as significant an impact on their surroundings, via the energy and magnetic fields they inject into the ISM. I will proceed to present low-frequency radio observations of the fields surrounding several X-ray binary systems, to help characterise their impact on the environment. Finally, I will give a brief overview of LOFAR, the new low-frequency telescope being built in the Netherlands, and outline its potential for the study of transient sources such as Galactic X-ray binary systems.