Can people please not set all their LED lights to flash mode please? Especially the emergency strobe setting? It's really crap for being seen by traffic, and it's also very uncomfortable for anyone nearby. Almost everyone in London had their lights set to 'retina pain' or 'epilepsy' this evening.
Motorists will see you much better if your light is steady. After all, if it's flashing it's off half the time and the slow flashes are long enough that an eye could pass across you whilst your light is off. Plus it takes much longer to track where you are going if your light is flashing slowly.
Steady main front and rear light, and then small flashy extra ones to denote a cyclist, I reckon.