Originally named, Great British Nuclear, Great British Energy - Nuclear is an arm's length body of the Department for Energy Security and Net Zero, dedicated to supporting the development and deployment of new nuclear technologies in Great Britain. We play a crucial role in advancing nuclear new build, ensuring the UK's energy security and achieving net-zero carbon emissions. Great British Energy - Nuclear focuses on fostering innovation, facilitating investment, and coordinating efforts across the nuclear industry to build a resilient and sustainable energy future. Great British Energy - Nuclear's first step was to start the technology selection process for Small Modular Reactors (SMRs) in 2023. SMRs can potentially be quicker to deploy and less expensive to build than traditional nuclear power plants because they are smaller, have factory based modular manufacturing and more flexible deployment options. In June 2025, Great British Energy - Nuclear announced that Rolls-Royce...

This is an excellent opportunity for an experienced estimator with a strong background in mechanical building services to join a successful business delivering technically challenging projects across a range of sectors. The Mechanical Estimator will play an important role within the pre-construction function, taking responsibility for the preparation of accurate, competitive and commercially robust tenders. You will be involved throughout the tender process, from the initial review of enquiries and technical documentation through to final submission, tender clarification and handover to the delivery team following contract award. The successful candidate will have a comprehensive understanding of mechanical building services and be comfortable estimating packages incorporating HVAC, heating, chilled water, ventilation, air conditioning, domestic water, drainage and public health systems . The Role As Mechanical Estimator, you will work closely with the wider estimating,...