Thanks,
The show was on virgin ultra HD,it recorded when it should have. There is no reason why the time would change, it's not like it's not like it's a channel that shows live events or news, and 1 episode of season 2, plus the whole of season 3 only have the last 20 minutes,it recorded the full hour, plus a minute early and four minutes later.
Virgin just seem to do things like this,box sets with missing episodes etc.