I have a block-paved driveway adjoining my neighbour's tarmac driveway. There's no raised edging, divider/fence between the two driveways. My neighbour's driveway is deteriorating, and a lot of gravel, sand gets kicked onto drive by the neighbour's family walking on their drive and some also gets washed onto my drive by rain. I got my driveway cleaned thrice, but the neighbour has taken no steps to prevent the gravel slipping to my drive. I thought the neighbour would take the hint, and I am sure the neighbour knows that I'm not happy with the condition of his driveway. I'm reluctant to ask the neighbour to create a barrier. What are my rights?