  We present the discovery of six millisecond pulsars (MSPs) in the High Time
Resolution Universe (HTRU) survey for pulsars and fast transients carried out
with the Parkes radio telescope. All six are in binary systems with
approximately circular orbits and are likely to have white dwarf companions.
PSR J1017-7156 has a high flux density and a narrow pulse width, making it
ideal for precision timing experiments. PSRs J1446-4701 and J1125-5825 are
coincident with gamma-ray sources, and folding the high-energy photons with the
radio timing ephemeris shows evidence of pulsed gamma-ray emission. PSR
J1502-6752 has a spin period of 26.7 ms, and its low period derivative implies
that it is a recycled pulsar. The orbital parameters indicate it has a very low
mass function, and therefore a companion mass much lower than usually expected
for such a mildly recycled pulsar. In addition we present polarisation profiles
for all 12 MSPs discovered in the HTRU survey to date. Similar to previous
observations of MSPs, we find that many have large widths and a wide range of
linear and circular polarisation fractions. Their polarisation profiles can be
highly complex, and although the observed position angles often do not obey the
rotating vector model, we present several examples of those that do. We
speculate that the emission heights of MSPs are a substantial fraction of the
light cylinder radius in order to explain broad emission profiles, which then
naturally leads to a large number of cases where emission from both poles is
observed.

Solar and Stellar Astrophysics;High Energy Astrophysical Phenomena