Hydride superconductors under megabar pressures offer a promising route towards room-temperature superconductivity [1-5]. Among these materials, LaH10 stands out with the highest superconducting transition temperature, approaching 250K [2, 3]. Theoretical predictions have played a key role in identifying new high-Tc candidates and guiding experiments, however the extreme pressures required make their study challenging. Our group in Bristol has developed a new approach to synthesise hydride superconductors as thin films [6, 7]. I will present the synthesis of the first thin films of LaH10 and discuss their superconducting and structural properties, obtained by resistivity measurements in magnetic fields and synchrotron powder X-ray diffraction, respectively. I will also discuss the stability of the fcc LaH10 structure over time, which has recently attracted attention following reports of inconsistent results between different experimental techniques [8, 9]. [1] A. P. Drozdov, et al., Nature 525, 73 (2015); [2] A. P. Drozdov, et al., Nature 569, 528 (2019); [3] M. Somayazulu et al., Physical Review Letters 122, 027001 (2019); [4] I. A. Troyan et al., Advanced Materials 33, 2006832 (2021); [5] P. P. Kong et al., Nature Communications 12, 5075 (2021); [6] J. Buhot et al., Physical Review B 102, 104508 (2020); [7] S. Cross et al., Physical Review B 109, L020503 (2024); [8] Y. Zhou et al., Nature Communications 16, 1135 (2025); [9] V. Minkov et al., arXiv:2507.08009 (2025).