Don't ride a bike like most people drive. i.e

Look far ahead if the next traffic light if red no need to race towards it cutting other cyclists up.

When at a a set of traffic lights there is no need to filter past the cylist that over took you a few min ago and sit infront of him /her for not reason then get in thier way when the light turn green.

Reverse if you ride on the right hand side of the road.
When there is a junction on your left, a que of traffic going along the road with a lorry just infront of the junction to gether with a cylist waiting in the cycle lane by the junction DO NOT blast through. Vechals turning into the side road from the other direction can not see through lorries, they can not see you. Last summer I would see an ambulance at one junction nearly every week becuase of this. Once the idiot had been culled it was fine. Now the nice weather has come people are blasting through this junction agiain.