Title:The accretion history of the halo of M31 as probed by its globular cluster 
population

Abstract:
In the past few years we have  discovered many (~ 100) new globular clusters in the 
outer halo of M31, out to our survey limit of R_proj > 120 kpc (e.g. Huxor et al. 2008; 
Huxor et al. 2011). We have shown that these clusters are associated with stellar 
substructure in the halo, and have almost certainly been accreted alongside the dwarf 
galaxies which have been disrupted (Mackey et al. 2010). I will present new results 
from our (now complete) multi-year campaign, including the ensemble properties of the  
GC system, and new velocity data.