In mid-2018, between the broadcast of Series 14 and 15, Channel 4 restrospectively decided to renumber how they were billing each run of episodes. Accordingly, the fifteenth time they have billed a "series" as starting (July 2018), they are now promoting as Series 16. The discrepancy has arisen from an arbitrary decision to now label the two April 2013 specials as Series 1, with the following, first full series now considered Series 2. This means that no episodes have ever been billed in TV listings as 'Series 15', skipping straight from 14 to 16. British Comedy Guide has chosen to adhere to the consistent original numbering.