  We measure the bulk flow of the local Universe using the 6dF Galaxy Survey
peculiar velocity sample (6dFGSv), the largest and most homogeneous peculiar
velocity sample to date. 6dFGSv is a Fundamental Plane sample of $\sim10^4$
peculiar velocities covering the whole southern hemisphere for galactic
latitude $|b| > 10^\circ$, out to redshift ${z=0.0537}$. We apply the `Minimum
Variance' bulk flow weighting method, which allows us to make a robust
measurement of the bulk flow on scales of $50$ and $70\,h^{-1}{\rm Mpc}$. We
investigate and correct for potential bias due to the lognormal velocity
uncertainties, and verify our method by constructing $\Lambda{\rm CDM}$ 6dFGSv
mock catalogues incorporating the survey selection function. For a hemisphere
of radius $50\,h^{-1}{\rm Mpc}$ we find a bulk flow amplitude of
$U=248\pm58\,{\rm km}\,{\rm s}^{-1}$ in the direction $(l,b) =
(318^\circ\pm20^\circ,40^\circ\pm13^\circ)$, and for $70\,h^{-1}{\rm Mpc}$ we
find $U=243\pm58\,{\rm km}\,{\rm s}^{-1}$, in the same direction. Our
measurement gives us a constraint on $\sigma_8$ of $1.01^{+1.07}_{-0.58}$. Our
results are in agreement with other recent measurements of the direction of the
bulk flow, and our measured amplitude is consistent with a $\Lambda{\rm CDM}$
prediction.
