London Boulder has been supporting countless properties for more than 18 years. With the natural aesthetics of boulders and the strength and reliability of traditional segmental retaining wall units, London Boulder BIG Blocks are the perfect solution for both strength and style. London Boulders are fully engineered and designed for fast installation. Whether you need a residential wall to increase the size of an outdoor living space or a commercial wall that holds up an entire building, London Boulder can handle it.