Hello, I am a solicitor with 20 years experience. I will try to help you with this. Can you just tell me how it came about that you bought the wrong land.
The councils technician incorrectly included it in their plans
OK and was this the land that was described as being sold to you in the contract (eg All that land shown and marked in red etc....). Also where is the land located relative to your house and that of your neighbour?
I don't have the contract
It is at the front of the property it is their driveway
The important thing here is to be sure that this land was in fact sold to you. You are relying on the plan. You need to know how the land was described in the contract for sale. Is it described in words? Is the plan merely illustrative or designed to define the land conveyed.