Since 2018, the British Library's Shared Repository Service has offered UK cultural heritage IROs a platform to share the wide range of research outputs produced by AHRC-funded organisations: from published works to podcasts, exhibitions to data, and blog posts to grey literature. Since 2021, the repository service has received iDAH funding, an investment that has clearly signalled AHRC's commitment to the repository service as a means of delivering iDAH goals of networked heritage research. The most recent round of iDAH funding facilitated significant improvements to the platform. It is now wholly compliant with Plan-S technical requirements and has improved the Universal Viewer functionality, which allows users to view outputs without having to download them. The repository service has also benefitted from iDAH-funded resourcing across the BL's Research Infrastructure Services team, who maintain the repository platform, onboard new partners, assist current partners and run training events across the UK to help embed Open Access principles and best data management practices throughout the sector (even globally via our online sessions). We continue to share our experiences of developing the service, and learn from others delivering similar offerings, internationally. Over the last year, IROs and other cultural heritage organisations have been encouraged by iDAH's continued funding of the repository service and we have three partners already waiting to join. Multiple IROs who are waiting to join the service have told us that the AHRC's commitment to fund the repository is critical to their decision to join the service. Our discussions have confirmed that most do not have the resource to set up their own repository and that to do so at this point, rather than considering a shared option, would require very detailed justification. AHRC iDAH funding for a further 18 months will therefore enable us to expand the service to: onboard those organisations already waiting to join and encourage others to sign up by signalling trust in the Shared Repository Service; pilot a 'general purpose' repository for smaller AHRC-funded organisations; achieve trusted digital repository certification; and continue to deliver training in scholarly communications best practice.