If you were under "Radar Control Service" you were inside controlled airspace, an IFR flight and therefore should be equipped and qulified to fly IFR i.e. to fly at night.
Niknak, I don't understand this. I've been placed under "radar control" numerous times when taking VFR transits through zones at all times of the day : I've also been handed substantial "re-routes" under these conditions.
Care to clarify your comments ?
FF