V8 Vantage, squeak at low speed.

[Desmo]

We have noticed this on a few new cars, it is the handbrake pad's. It seems the factory adjustment is a little bit tight on the new cars, we have backed of the adjustment a little bit and it's fixed. Speak to your dealer to sort it out. Also the shims behind the normal brake pads can resonate a bit. Copperslip between the shim and the metal backing of the pad helps.
If your only town driving, the brakes may squeal a bit, it's because they don't like going slow! take it out and drive it properly.