For Aston Lawyer.. Thanks for your response. If I meet their demands, it means I that lose the right to keep my shed in the garden which will be part of the sale. I think it would be detrimental to the value of the property if we say that you cannot use the rear garden so I would be reluctant to give up just yet. They have only owned the property for about 5 years but it has been in their family for decades so not sure if this has any bearing. I am thinking that perhaps it might be better to suggest splitting the land - this could work if they agree but I cannot see how they can have the upper hand when I officially own the land and I am willling to share it?