Best doggy sitter

I've always grown up with dogs and love being around them! The first one we ever had was a cavalier king Charles when I was a child. Since then my family have been owners of Golden Retrievers and my Brother currently has a Labrador boxer. I'm thinking about getting a puppy of my own soon but at the moment would very much like to look after dogs from other owners. They will be coming into a fantastic and loving home, which is a short stones throw from Clapham Common and so plenty of open spaces. The flat I own has its own private roof terrace which opens out to a large open plan kitchen. A typical day could include both morning and evening walks, or more if the dog requires the exercise. I work from home most days so will always be around to look after him or her.