@vinomover I've got the same car as you, also in London. What you have described is perfectly normal for short winter trips. Go check out the forums for other EVs from manufacturers, it's the same story. I've got no issue with the car, it performs exactly as I expected.
If your car is parked outside in the winter, even if you precondition it, the battery is still going to be bloody cold, and your drive of 15 miles isn't going to warm the battery considerably.
Furthermore, doing the same journey from work to home after the car has been parked all day will also result in the car using more electricity than you would like.
I'm getting about 190 miles range at the moment but that's because I do a lot of very short trips (<3 miles) - if I have to do a longer motorway journey (> 50 miles) in these temps (10C/50F), I could get about 220 miles of range, as that's what I was getting in October when I first got my car.