Stage 1 ending:
This seems to be an official and free YT steam of all stages not sure if it's international:
Article on team line ups etc
https://www.cyclingweekly.com/racing/tour-of-britain-men-2025-start-list
Currently watching stage 1 live on YouTube courtesy of Channel 4's Welsh language channel; S4C. Very much enjoying the Welsh language commentary!
21 stages of summer enjoyment ahead. Ahhhhhh...