On FB, search "eats on feets." This is a group that can organise donations of EBM.

I think you could also call the breastfeeding helpline (1800 MUM 2 MUM). The mother's who answer the phones are trained counsellors, and would certainly be able to point you in the right direction. They may be able to answer questions about donated EBM as well as artificial milks.

all the best
Catherine