Although I tend to concentrate on street shots, I am drawn to this part of London for night shots:
Black and white and red

st paul and phone box hdr by petach123, on Flickr
Not always black and white

light_trails by petach123, on Flickr
Lonely Vigil

_1100030 by petach123, on Flickr
Blue Hour

st_pauls_by_twilight_colour by petach123, on Flickr
Abrupt End

abrupt_end_colour by petach123, on Flickr
Moonlit Millennium

moonlit_millennium by petach123, on Flickr
Fairy Dust, Millennium Bridge

Fairies on the Bridge by petach123, on Flickr
The Couple

The Couple by petach123, on Flickr
Bridge End

bridge_end by petach123, on Flickr
Black and white and red

st paul and phone box hdr by petach123, on Flickr
Not always black and white

light_trails by petach123, on Flickr
Lonely Vigil

_1100030 by petach123, on Flickr
Blue Hour

st_pauls_by_twilight_colour by petach123, on Flickr
Abrupt End

abrupt_end_colour by petach123, on Flickr
Moonlit Millennium

moonlit_millennium by petach123, on Flickr
Fairy Dust, Millennium Bridge

Fairies on the Bridge by petach123, on Flickr
The Couple

The Couple by petach123, on Flickr
Bridge End

bridge_end by petach123, on Flickr