Departing VFR in fog
The SATCO of a controlled airfield which lies outside Controlled Airspace recently commented (in another place) that they get a lot of VFR departures in IMC (he particularly mentioned fog) from the >2T brigade.
I asked him whether he thought that there were any benefits to departing IFR in shallow fog, where the entire flight was outside controlled airspace.
I haven't had a response, presumably because he has been away, but can anyone here help?
I am thinking of the Oxford/Cranfield/Biggin/Filton world, in, say, R350, with tops at around 150' and no other weather. There is a take-off alternate and both destination and alternate are CAVOK.