A long week this one. Another chilly day in the city and despite sundown visibly getting later, day by day, I (Chris) still seem to be leaving the office in darkness. I popped across London Bridge for a view from the South side of the Thames for a change. I learnt on Monday a bit of the art of being patient with light trails, and having watched the movement of the buses on the bridge for a few minutes, I worked out roughly when to start and stop my shots for a planned light trail. This was the most successful.