Kirsty (kirsty269) had found an old derelict farm property that is an ideal location and advertised her availability on UKPM. We'd visited Kirsty the week before to meet and scout the location, so fortunately we weren't shooting from cold.
We started shooting using the limited available light - relatively slow shutter speeds and the camera on a tripod which is so not my style.
I subsequently moved on to use a little fill flash and hand-held at higher ISOs.
We even finished with the studio flash on a boom with a softbox (powered by a generator) - having carried, we made sure we were going to use it!