Question Author
Many thanks for the responses, very much appreciated. I do take responsibility, as i was, as you quite rightly state responsible for driving onto the main road. I wasn't speeding as I had just moved from a stationary position 20 metres back. It wasn't the rear I hit as in the back of the car it was the rear passenger door. I was edging out and it appeared nothing was coming, I looked the other way and in a split second the other car was infront of me as I started moving out. I have gone over it in my mind and definitely wasn't speeding, I could in retrospect have been more observant. The person parked illegally gave the other driver her contact details and said she would be a witness so we shall see. Driving for 23 years and first ever accident, luckily no one was hurt.
Many thanks