Similar thing happened to me, and resulting in my beloved Suzuki Swift (dubbed "The Passion Wagon") being wrote off, taxi driver parked on the footpath of a one way street, no indicators, pulled out into the side of me.
try and sort it privately if you can, although if you choose to go through the insurance companies it will be his word against yours unless you have witnesses, and if he does not accept liability it will take longer as they would have to rebuild the series of events that lead to the accident, if he failed to indicate and give other road users (i.e you) enough time to plan and react accordingly, then he was in violation of the highway code.
the most likely times for an accident are the first 5 miles and last 5 miles of your journey , ride safe peeps