Thanks for your reply and apologies for the delay.
Firstly, you do need to check your Deeds to see if your neighbour does indeed have a legal right of way over the drive. You can either speak to a local Solicitor about this or you can apply for a copy from the Land Registry website (the Deeds are officially called "Official Copies") and if there is a right of way, this will be mentioned in the Charges Register.
If there is a right of way, 90 times out of 100, the right of way will be for the benefit of the neighbour's property, which basically means anyone and any type of vehicle can use the drive to gain access to and from the neighbour's property.
Only if the Deeds says the right of way is restricted for "residential purposes of the neighbour's property", would you be able to stop him from using the drive for commercial purposes.
If there is nothing in your Deeds concerning any right of way, then your neighbour has No legal right of way- if only oral permission has been given, this does not legally tie you from allowing him to carry on using the right of way.
I hope this assists and set sout the legal position.