Last one for now... honest. St Paul's creeping in on the far right, the red line is London Bridge, and HMS Belfast, under the bridge, is joining in with the coloured light changes. The lights on the towers at this moment are actually advertising, one is EDF energy, whom I suspect are sponsoring the light show as it followed on after a few minutes.
Iso 200, f16, 1.6sec, 32mm. Tripod and remote release.