Great British Nuclear, the arms-length body set up to oversee the UK's plans for new nuclear, is to launch a tender to procure up to two owner's engineers as part of its small modular reactor programme.

TerraPower has formally notified UK regulators that it plans to begin the generic design approval process for its Natrium sodium-cooled fast reactor, a first step towards deploying the technology in an international market.

Holtec has announced that it has submitted its final tender response to Great British Nuclear as part of the UK's ongoing small modular reactor technology selection competition. GE Hitachi and Rolls-Royce SMR earlier confirmed they had submitted final tenders.

The UK Office for Nuclear Regulation has published its first report on international regulatory collaboration on small modular reactors, outlining how it is working with international counterparts to create more efficient, harmonised approaches to reactor design assessment. Meanwhile, more US states have joined a lawsuit challenging federal licensing rules for advanced nuclear energy technology.

Two of the four shortlisted small modular reactor vendors - GE Hitachi and Rolls-Royce SMR - have announced they have submitted their final tender responses as part of Great British Nuclear's ongoing SMR selection competition.

British inertial fusion energy developer First Light Fusion and systems, engineering and technology company Frazer-Nash Consultancy have announced plans for collaborative research to advance fusion energy.

The UK government has announced GBP20 million (USD25.5 million) to kickstart Starmaker One – a British private fusion investment fund that it says will help fusion businesses and start-ups in the sector grow and commercialise at scale.

The second of three planned shipments from the UK to Germany of high-level waste in the form of vitrified residues has been completed. The waste has now been delivered to an interim storage facility at the Isar nuclear power plant site.

The second of three planned shipments of high-level radioactive waste has left the Sellafield site in northwest England and is being transported by rail and sea to its destination at the Isar interim storage facility in Germany.