Superior Stone - Contact Details - London Stonemasons London Stone Work, stonework, architectural stone work, natural stone, London Stone Work, Stone Masons, stonemasons, marble, limestone, granite, limestone, mantle, mantles, contemporary, traditional London Stone Work, granite London Stone Work, limestone London Stone Work Contact Details. Sales@superiorstone.co.uk. Phone: 01895 633 360. Fax: 01895 633 864. Superior Stone. Unit 3B, Pond Farm, Newyears Green Lane, Harefield, Uxbridge, …