I would like to ask for your advice on the below issue.

The incident happened on x at the corner of x and x  (London ).

Despite of the sign ‘one way’ (green arrow to straight ahead), I turned left from Great Windmill St.  I was caught on the spot and admit my mistake, too. I also accepted the fixed penalty (please see the attached document).

I wonder if there is any way to avoid the penalty points on my driving license – without going to the court. This was the first incident I had since I drive in the UK (for 4 years now); my job is related to driving on a daily basis therefore I would appreciate your suggestion / advice to prevent any additional penalty.