He joins Mace’s growing Consult business, where he will deliver its ambitious 2026 targets and growth, and transform the way Mace delivers infrastructure projects.

The role was previously held by Andy Sharples for 13 years, who is now moving into a leadership position at Mace’s client, Sellafield.

Oldham brings 30 years of consultancy experience in global infrastructure programmes.

Having started his career at British Nuclear Fuels, he was responsible for nuclear operations, going on to lead major decommissioning programmes.

He then spent five years in the Nuclear Decommissioning Authority setting up the management and operations contract, the lifetime plan and performance contract for a number of nuclear sites.

At Atkins, he has supported the organisation’s UAE leadership in delivering their ambitions in the nuclear sector, being part of the team helping the UAE to produce 5.6Gw of carbon-free power.

Before this he was a programme director at Atkins and worked in collaboration with Mace on several projects.

Mace’s service offer in Defence, Nuclear, Energy and Utilities has expanded rapidly to provide a wide range of fully integrated project and programme management services, alongside construction management and strategic advisory services.

Oldham will work together with Mace’s Head of Defence, David Martin, and Mace’s Head of Energy & Utilities, Javid Khaliq and Mark Lamphiere, Country Manager for Mace’s Ireland business, to grow the Mace’s service offer.

Jason Millett, CEO for Consult at Mace, said: “Having launched our 2026 business strategy, I look forward to having Andy onboard helping us to deliver our growth ambitions, expansion in international markets and unlock innovative approaches to major infrastructure delivery.

“Defence, energy, nuclear and utilities are key sectors for our Consult service offer, and Andy is in a perfect position to help us grow together.”