  The NASA Kepler mission has revolutionised time-domain astronomy and has
massively expanded the number of known extrasolar planets. However, the effect
of wide multiplicity on exoplanet occurrence has not been tested with this
dataset. We present a sample of 401 wide multiple systems containing at least
one Kepler target star. Our method uses Pan-STARRS1 and archival data to
produce an accurate proper motion catalogue of the Kepler field. Combined with
Pan-STARRS1 SED fits and archival proper motions for bright stars, we use a
newly developed probabilistic algorithm to identify likely wide binary pairs
which are not chance associations. As by-products of this we present stellar
SED templates in the Pan-STARRS1 photometric system and conversions from this
system to Kepler magnitudes. We find that Kepler target stars in our binary
sample with separations above 6 arcseconds are no more or less likely to be
identified as confirmed or candidate planet hosts than a weighted comparison
sample of Kepler targets of similar brightness and spectral type. Therefore we
find no evidence that binaries with projected separations greater than 3,000AU
affect the occurrence rate of planets with P<300days around FGK stars.
