You’ll need to stay up later (or set your V+/Sky+ box) to watch The Colbert Report on FX UK as it now airs at around midnight (it used to air at around 11pm) Monday-Friday. This can vary.
For example, Wednesday’s edition airs at 12am, Thursday’s edition airs at 12.05am, Friday’s edition airs at 12am. On Monday next week, The Colbert Report Global Edition will be on at 12.15am.
They also now appear to be airing The Colbert Report at midnight on Saturdays as well, and the usual repeats airing in the early hours of Sunday morning (from around 2am).
Check your TV’s electronic programme guide for more information.