NICE PICS !
As for public awareness, our Barry James goes each year to MC Cambridge Rock and Yarmageddon and he remains convinced that everyong who sees him on stage and hears him talking up Caroline goes home and becomes a new listener.
The recent Radio Caroline musical drew an audience of 20.000 and each one knew at the end of every performance that Caroline was still broadcasting.

But did these things alter our listener graph. Not in the least. Of course we have been included with segments in :

Abandoned Engineering.
Four in a Bed.
Antiques Road Trip.
Sailing The Shipping Forecast.
Great Railway Journeys.

You can be sure that somewhere these are coming around again and again as repeats on minor TV channels. But the programmes are not specifically about Caroline and you can be sure that when the viewer goes to put the kettle on or certainly by the next morning, the Caroline element is forgotten.
It is going to take a major hit of publicity to make any noticeable increase. Maybe the publicity of the newly fixed ship will help.
But then the people have to have a way to tune in and have to like what they hear.
Bit of a hard slog, but we do our best !

PM.