Alf,
The Prosecution may apply to amend the errors that you mention at Court and you would have to successfully persuade the Court that the amendment would not be in the interests of justice. In my experience, the Prosecution are likely to succeed in their request to amend.
If you are interested in defending the case alleged against you, we are able to provide you with advice in relation to whether or not there are any defences applicable in your case for a fixed fee. We are able to work to close deadlines and often successfully represent those who have been advised by other Solicitors, who are not motoring defence specialists, that they are "bang to rights"
If you wanted to discuss matters further please do not hesitate to contact us.