Hello I am a solicitor with over 15 years experience. I will try to help you with this.
I am not suer that I quite understand the situation you are describing here. Are the fences that have been taken down at the front of your house so that the people from the houses you describe drive directly from you cul de sac onto their land?
Was there any discussion between you and the people who removed their fences before they did so?
Also is there a foot path where they have done this and is the road maintained by the local authority?
OK, thankyou for that. I will be in and out of meetings today but will get back to you with an answer later today.
OK so 2 houses backing onto your cul-de- sac have removed the fence at the back of their gardens so that they can use their back gardens to park on. They drive over the pavement to gain access to their property.
They can do pretty much want they want with their gardens. They do not need permission to remove their back fence and are entitled to use their own land as they want.
There is a general prohibition against driving over footpaths but there is an exception to this prohibition if the reason for driving is to gain access to property one is lawfully allowed to enter.
I fear there is not much you can do about his. It might be worth contacting your Local Authority about this if there is a child safety issue (eg if there is more traffic where children play). It is a very long shot but they could add bollards or something to the road to block the route. This is a very long shot and unlikely to succeed I am afraid.
I hope this is answer is useful even if not the one yo were hoping for but please feel free to ask further questions.