  Debris discs around main sequence stars have been extensively characterised
from infrared to millimetre wavelengths through imaging, spectroscopic, and
total intensity (scattered light and/or thermal emission) measurements.
Polarimetric observations have only been used sparingly to interpret the
composition, structure, and size of dust grains in these discs. Here we present
new multi-wavelength aperture polarisation observations with parts-per-million
sensitivity of a sample of twelve bright debris discs, spanning a broad range
of host star spectral types, and disc properties. These measurements were
mostly taken with the HIgh Precision Polarimetric Instrument on the
Anglo-Australian Telescope. We combine these polarisation observations with the
known disc architectures and geometries of the discs to interpret the
measurements. We detect significant polarisation attributable to circumstellar
dust from HD 377 and HD 39060, and find tentative evidence for HD 188228 and HD
202628.
