Thanks - I should have specified - light is to see by, especially in dark / poorly lit lanes, to avoid potholes - which on tarmac roads can be far worse that anything you come across on a trail . . . . . So the Lezyne is a good recommendation.
I use a blinkie to be seen by others, I tend to use it day and night.
Interesting suggestions, thanks, I will look further at them. I was hoping to avoid using an accessory bar, hence the crown mounting on a bracket, but the Paul kit and brackets looks interesting!!
Lewis