Ian Brian Johnston (June 1952 – 15 February 2023) was the Independent Gwent Police and Crime Commissioner.

As a sergeant he served in the training department and as an inspector he became the staff officer to the Chief Constable John E. Over Johnston returned to the CID on promotion to chief inspector and then as a superintendent he was seconded to the Police Requirements Support Unit at the Home Office.

Johnston criticised Napier's management style, saying that their relationship "was never going to work," and confirmed that he had told her to either retire or "be removed.

"[6] Johnston and Napier both later gave evidence to the Home Affairs Select Committee, which discussed the circumstances of her retirement.

[7] The Select Committee report criticised Johnston's "disdainful attitude towards scrutiny by Parliament, as well as an indication of a clear over-sensitivity to criticism".