I know the theory, click on the date, then scroll down, however, I missed the updates the week before Christmas, so tried to catch up with no luck during Christmas, nothing more than one week was available. This is not the first time I have not been able to catch up more than a week after. It's bad enough that I can't watch The Street any more, having watched it from the very first episode, as I now live in Spain, but it's not always possible to find the time for the  catch ups within a week.