Last month the percentage of both BBC News London and worldwide online news coverage of Brexit that mentioned the so-called "no deal" scenario was rapidly trending downwards. Such coverage bottomed out on September 20th on BBC and September 23rd worldwide, but the following day began trending back upwards again in both mediums. The percentage of Brexit coverage mentioning the no deal scenario has stabilized in recent weeks, but is trending back up again the last few days.
The timeline below shows the percentage of BBC News London airtime mentioning "Brexit" that also mentioned "no deal" or "crash" Since January 1, 2017.
The timeline below shows the same results, but for worldwide online news coverage.