bp is aiming to be a very different company by 2030, and our ambition is to be a net zero company by 2050 or sooner and to help the world get to net zero. A key component of becoming an integrated energy company surrounds low carbon electricity and energy, and within that, creating a distinct position in hydrogen, including aiming for a 10% market share in core markets. The **HYDRI** project, led by bp, aims to develop stand-off gas sensing devices critical to the safe roll-out of hydrogen as a widely used energy source in domestic, industrial, and transportation sectors. It harnesses the UK's world-leading expertise in single-photon detector arrays and quantum-sensor technology products. The HYDRI consortium comprises internationally recognised UK organisations at the forefront of the innovative and high technology sectors they serve, who are extremely well placed to deliver the state-of-the-art modules required for these devices. The consortium is led by a globally recognised end-user of the technology who will steer the performance of the project and carry out extensive testing in a range of high-value application scenarios. Finally, the project benefits from the expertise of the UK's leading academic and research technology organisation, who are performing critical system modelling, design, and integration activities throughout this exciting project.

QT Assemble brings together a consortium of UK companies to develop highly-innovative assembly and integration processes for new markets in quantum technologies. Waveguide writing, nanoscale alignment and monolithic integration will be used to deliver new levels of performance in robust and reliable platforms. High-performance components and systems will be demonstrated including highly-integrated lases, photon sources, photon detectors and ultra-cold matter systems. New commercial opportunities have been identified that require reliable and robust operation in quantum sensing and quantum information processing markets.

Navigation using space-based satellite signals underlies many critical technologies across the UK. Most advanced navigation technologies rely on the signals from networks known as the Global Navigation Satellite System (GNSS) to remain accurate over long distances. Loss of these signals result in an unstable navigation systems and increasingly less accurate location and direction estimation during operation. GNSS signals may be lost accidentally from criminal activity or due to military action. For example, in 2018 several passenger flights off the Norwegian coast lost GNSS signals due to signal 'jamming' from military exercises. In addition, 'Spoofing' or deliberately transmitting false guidance signals has been demonstrated as an insidious cyberweapon that can deliberately mislead and fool cargo or passenger vessels. As systems are increasingly automated, the consequences of the loss of GNSS signals dramatically increase and may include loss of property, or in the extreme case, loss of life. Local on-board instruments can provide measurements to stabilise current navigation system technology without GNSS signals. Quantum technology-based sensors have the potential to provide stability to navigation systems over long periods of time due to the unique combination of high sensitivity to motion with superb isolation from changes in the surrounding environment. High-BIAS2 will demonstrate the ability of a quantum rotation sensor's ability to stabilise the orientation of aircraft guidance system in the absence of GNSS signals. Local stabilisation using quantum technology will decrease the reliance of navigation systems on GNSS and provides a measure of protection against signal loss, jamming, and spoofing to increase safety and security.

Progress in commercializing cold-atom-based quantum instruments is limited by the availability of reliable size, weight, power and cost-reduced narrow linewidth lasers. Great progress has been made in the development of semiconductor laser platforms to allow for many of the laser-cooling functions to be achieved, but some of the more-challenging functional requirements are unlikely to be met by this approach. The Safire project will accelerate the commercialisation of cold-atom Quantum technologies including optical clocks, gravimeters, inertial-navigation units and ion-trap quantum computers. In optical clocks, the magic wavelengths for the creation of an optical lattice at 813 nm (Sr) and 759 nm (Yb) require high power and narrow linewidth. This function is generally achieved with a tunable Ti:Sapphire laser. These laser systems generally cost ~£100k and are large and fragile devices, making them one of the primary impediments to system miniaturisation and cost-reduction. Many quantum instruments based upon cold-atom interferometry, such as gravimeters and inertial navigation units for GNSS-free navigation, require a narrow-linewidth Raman-beam to operate. In Rubidium interferometers the relatively high-power (multiple Watts in some systems) and narrow linewidths (~10s of kHz) required are often provided by a frequency-doubled telecoms-fibre laser. These lasers are expensive (\>£50k) and their complexity often leads to unreliable operation. This represents a significant risk to the potential commercialisation of interferometer-based instruments that must be fielded in non-laboratory environments. The Safire project will develop a new capability in ultra-compact diode-pumped-solid-state lasers that addresses the requirements of the optical lattice function in clocks, the Raman-beam function in atom interferometers, and also for ion-trap quantum computers, in a form-factor appropriate for integration into robust Quantum instruments usable outside of the laboratory environment. This development builds upon NPL's long history in optical clock development, Optocap and RAL-Space's experience in micro-ECDLs for cold-Rubidium instruments from the Innovate REMOTE project, and on Caledonian Photonics' capability in miniaturised, robust monolithic DPSS lasers.