When dealing with noise and other nuisance we try to;  

• act quickly to try to prevent an issue escalating;
• take a restorative approach whenever appropriate; and
• remain aware of the informal and formal remedies available to both parties.

As a restorative approach means not ascribing blame to the person complained about, this guidance avoids using terminology like "complainant" and "perpetrator" and instead uses P1 to describe the person making the complaint and P2 to the person complained about.

We aim to avoid legal action when we can.

See the presentation here from a neighbours workshop at the landlord services induction weeks.