  The study of Generalised Parton Distributions (GPDs) promises to provide new
knowl- edge of the structure of the nucleon, including, most notably, access to
the total angular momentum of quarks within the nucleon. It can be difficult to
ascertain new information on the distributions, but amongst all the exclusive
processes that can provide access, Deeply Virtual Compton Scatter- ing (DVCS)
is relatively simple and experimentally accessible. The HERMES collaboration
has the most diverse results pertaining to DVCS of any experiment, extracting
asymmetries in the azimuthal distribution of produced photons according to both
beam helicity and charge and target spin state. In this talk, we provide an
overview of the HERMES DVCS result catalogue and explain how the results are
used to improve constraints on the underlying GPDs.
