evidence: In the 20 years since the Police Service of Northern Ireland (PSNI) replaced the Royal Ulster Constabulary (RUC), this has been the greatest change; that the militarised, security-focused and overwhelmingly Protestant police force of the past has been replaced by a modernised service reinforced by robust accountability structures – the Police Ombudsman and the Policing Board – and which is, if not fully representative of the communities it serves, is at least more so. [...] Twenty years on, he is now deputy chief constable, the second most senior officer in the PSNI. The makeup of the force has changed, with a minority – 17 per cent – of officers also former members of the RUC; so too has the types of crime and the increased demand around, for example, domestic violence, where the PSNI receive a call approximately every 20 minutes.