The National Infrastructure Commission for Wales / Comisiwn Seilwaith Cenedlaethol Cymru is the public body that advises the Welsh government on infrastructure. You can follow their official PeerTube account at:
@nicw@urbanists.video (in English and Welsh)
If the videos haven't federated to your server yet, you can browse them all at https://urbanists.video/a/nicw/videos
They also have a non-video account at @nicw@toot.wales