Profile: Thornhill Security Ltd provides a range of specialist safes, vaults and other security products. We offer churchill bulldog 400, which is a large capacity square door underfloor safe to protect cash and valuables. Our steel security cabinet provides protection for valuable items, documents and data media from burglary. A free standing cash safe made of lighter weight material for easier installation and fire protective material in the safe body and door. Fire resistant filing cabinets certified to give 2 hours fire protection for documents.