This Practice Note sets out the position according to the Pre-Action Protocol for Professional Negligence claims currently in force. Scope of this Practice Note This Practice Note considers the Pre-Action Protocol for Professional Negligence claims (the Protocol), its application, aims, the general consequences of non-compliance and the relationship between limitation and Protocol compliance. It identifies the key stages required by the Protocol, ie the preliminary notice, letter of claim, acknowledgement, letter of response and the subsequent commencement of proceedings. It also looks at the exchange of information between the parties, experts, alternative dispute resolution (ADR) and the stocktake provision in the Protocol. For specific guidance on the Protocol from the perspective of a prospective party to such a claim, see: • Practice Note: Professional negligence claims—pre-action protocol—claimant issues • Checklist: Professional negligence claims—claimant steps—checklist • Practice Note: Professional negligence claims—pre-action protocol—defendant issues • Checklist: Professional negligence claims—defendant steps—checklist Throughout this Practice Note the Pre-Action Protocol for Professional Negligence claims is referred to interchangeably as ‘the Protocol’ or the ‘professional negligence PAP’. For guidance on