UKRO has passed on info on who the panel members and chairs will be for the current round of ERC Starting Grants. It's worth having a look at these, to get some idea of the great and the good who will be looking at your application, and to do a bit of digging if you've not come across them before, so that you can try to prepare for the angle they will take on your proposal.
Note that the panel members list is for the last call, not the current one. However, the ERC is intending to use these members to form the core of two new panels, which will sit in alternate years. I'll pass on the info on this when it's available.
You can have a look at the lists here: