she got quite flustered and started saying that I was jointly liable as I undertook a bus and she was unsighted (I didn't, the bus was behind me)
I don't have any witnesses or CCTV
Contact that bus company immediately. A large proportion of buses are fitted with CCTV, much of which could support your claim regards to the road positioning. You are allowed to request a copy of any footage that they have retained as a Subject Access Request under the Data Protection Act. Even if they don't have any usable CCTV, by using the time and location of the collision, they should be able to identify the driver who could provide a simple statement of the sequence of events. They don't need to make any comment on who was at fault, they can just say something to the effect of "I was driving along X road. As I was approaching the junction with Y road I was positioned behind a cyclist. A motorist turned across our lane from X road to enter Y road and collided with the cyclist."
You need to do this as a matter of urgency as any delay may mean any footage is wiped or a witness statement loses credibility.
Contact that bus company immediately. A large proportion of buses are fitted with CCTV, much of which could support your claim regards to the road positioning. You are allowed to request a copy of any footage that they have retained as a Subject Access Request under the Data Protection Act. Even if they don't have any usable CCTV, by using the time and location of the collision, they should be able to identify the driver who could provide a simple statement of the sequence of events. They don't need to make any comment on who was at fault, they can just say something to the effect of "I was driving along X road. As I was approaching the junction with Y road I was positioned behind a cyclist. A motorist turned across our lane from X road to enter Y road and collided with the cyclist."
You need to do this as a matter of urgency as any delay may mean any footage is wiped or a witness statement loses credibility.