  Many nearby main-sequence stars have been searched for debris using the
far-infrared Herschel satellite, within the DEBRIS, DUNES and Guaranteed-Time
Key Projects. We discuss here 11 stars of spectral types A to M where the
stellar inclination is known and can be compared to that of the
spatially-resolved dust belts. The discs are found to be well aligned with the
stellar equators, as in the case of the Sun's Kuiper belt, and unlike many
close-in planets seen in transit surveys. The ensemble of stars here can be
fitted with a star-disc tilt of ~<10 degrees. These results suggest that
proposed mechanisms for tilting the star or disc in fact operate rarely. A few
systems also host imaged planets, whose orbits at tens of AU are aligned with
the debris discs, contrary to what might be expected in models where external
perturbers induce tilts.
