United Kingdom Street to Big Ben, London

The Golden Jubilee Bridge offers a great view over the Thames and towards the London Eye and Big Ben of course.

During blue hour or even during night seems to be a good timing to take photos at this place, because that's the time when you can shoot those light trails that are all pointing towards Big Ben and to the center of the image.
While taking the shots you should observe the green phases of the traffic, so that you have a minimum number of standing cars and more light trails. Another possibility is to merge multiple captures of light trails into one image, depending on how much lights on the streets you want to have.

Westminster Underground Station is just nearby.