My phone goes off at around 10pm, sometimes earlier if I'm not in the mood to be professional. I got a phone call last Thursday night at nearly 10, from a French guy wanting an outcall to his hotel in Central London. Not a chance I said, I'm tucked up in bed and I don't get out of it for anybody. I did say that if he was unsuccessful in finding anybody I'm available in the morning.
Suprise suprise, he called the next morning, saying he couldn't find anybody for the night before and could he see me later on in the morning before he went back home. He turned out to be a lovely gorgeous Frenchman with a wonderful accent. Even knowing what he looked like, I still wouldn't have gotten out of bed for him.
I don't know about other phone providers, but on Orange you get missed call alerts when your phone's off. I always have a chuckle to myself when I switch my phone on in the morning and receive texts that I've missed phone calls throughout the night. Including one recently at 4.20am. I'm wondering if they really expect me to be awake at 4 in the morning.
Even if I was a night bird I wouldn't go and see anybody at their home in the middle of the night. Not even for more money. Maybe at a hotel, surrounded by lots of people. It would have to be a big hotel in Central London. But late night callers I take no notice of.