Hi
I noticed this same issue last Sunday, Before I discovered the post, I contacted Virgin Media via Facebook to report the same issue.
I've seen that the episode No Vacancy has been removed from the Catch Up service but the episode listed as IRL when played, is still "In the Wind", which is not due to be shown on Fox for another few weeks.
Hopefully you can resolve this before the episodes No Vacancy and IRL are due to be removed from the catch up list of episodes.
Graeme