Hey mate,
i would advise to go to court and if possible have a solicitor.
I got done a few years ago at 69mph in a 30 and was originally charged with Dangerous driving.
Spoke to a solicitor and went to court, pleaded not guilty to the dangerous driving but would accept a reduced charge of reckless driving / speeding.
Ended up in court on 3 more occassions for intermediate diets and pleaded the same way each time, finally went to a "proper" court case which ended with the dangerous driving charge being thrown out, as I agreed to plead guilty to speeding and required my license for my job and to have access to my daughter, the judge gave me 5 points and a £200 fine.