If you can remember the registration number, or even a partial one, then it's worth talking to the rozzers or the cycle task force.
The Cycle Task Force are unlikely to be able to do anything there. It might be worth making a Roadsafe report, as there can't be too many Lambos in London and the style of driving of this particular driver might have been noticed before. While Roadsafe is an information-gathering mechanism in the first instance, they do take action in certain cases. Generally, if no actual crash and/or injury has occurred, don't expect too much action.
The Cycle Task Force are unlikely to be able to do anything there. It might be worth making a Roadsafe report, as there can't be too many Lambos in London and the style of driving of this particular driver might have been noticed before. While Roadsafe is an information-gathering mechanism in the first instance, they do take action in certain cases. Generally, if no actual crash and/or injury has occurred, don't expect too much action.