I need to build a small wall (less than 1m in height by approx 6m in length) where a small bank was was cut back from the side of my house. The wall would be stopping mud and rubble from the bank from contacting the side of my house in line with my building inspectors instruction, i therefore have laid paving slabs along the side of the house and will put in drainage shortly and i need the wall to stop the bank from crumbling away on to the path and blocking the drainage. Would the wall be classed as a retaining wall although the bank is quite small? Thank you.