i have the following stations preset on the radio in the van

radio 1 - for the news at 12.45 (and comedy stephen hawkins moments from jo whiley for the changing tracks )
radio 2 - for when the other stations have adverts on and if it's late at night, mark and not lard are ok
lbc - for when vannesa feltz is on her high horse
kiss - most of the time in the morning and afternoons
capital - just because it's a 6th slot to fill in the presets
bbc london - traffic and travel bulietins throughout the day plus robert elms in the afternoon and danny baker

if i'm ever out of reach of these stations i've found that kiss is available in wales and in norfolk as well so that's fine with me

and radio 2 for johnathan ross on a saturday morning plus the comedy hour from 1pm