They sometimes tell you what they're playing - you just need a keen ear to hear it. They are up and running again in Brighton I'm told - under a certain level of ambiguous legality...
Radio 4 for the Today programme, and things like Just A Minute ad I'm Sorry I Haven't A Clue.
Apart from that I mostly listen to Reverb or FIP - neither of which have a corporate playlist. The others on that list I find fundamentally unlistenable.