In addition to his criminal practice, Oliver often appears in a range of regulatory matters, advising and acting on behalf individuals, corporate bodies, Local Authorities, Government Departments, and Executive Agencies. His work ranges across Health and Food Safety, Customs and Excise, and Environmental Health. Oliver is also known to assist in training and seminars to Local Authorities and Executive Agencies in respect of regulatory prosecutions. 

He has been instructed to prosecute a number of private prosecutions brought by Local Authorities for offences relating to counterfeit and illegal cigarettes, some exceeding half a million pound in value. One cases successfully resulted in a custodial sentence of 10 months having been passed by the Crown Court to reflect the severity of the offending.

Oliver has also appeared on behalf of Drainage Boards in private prosecutions brought under the Land Drainage Act 1991 for failing to respond to notices.

Having been instructed to appear for an appellant challenging a Closure Order, the police force appealed the lower court decision to suspend the order. Oliver appeared at the Crown Court appeal and also in the High Court Administrative Division to respond to matters involving human rights and the closure order provisions. The case was reported and cited as Chief Constable of Humberside Police v Morgan [2024] EWHC 2859 (Admin). 

Oliver also appeared in an application to amend a restrictive covenant in the Upper Lands Tribunal Chamber. This again involved complex issues of Land Law and a contested hearing took place with a reserved judgment handed down. The case was also reported and cited as Hodgson & Anor v Cook & Anor [2023] UKUT 41 (LC).