Yep should be every day on ITV4. Coverage starts at 12 today. The highlights of the last stage are usually on the hour before the live starts. They don't show the full stage though so some days they might only have a couple of hours for the end of the stage like yesterday.
This was the first thing I saw and it seems to suggest only a few stages.
https://www.itv.com/itvcycling/articles/schedule-tour-de-france-on-itv
I guess I could walk over to the TV and look for it while I'm still TV licensed.