Cassini Maps was founded in 2005 and is now the leading supplier of historical UK and Irish mapping to both consumers and businesses. Cassini products have been principally developed to help discover the hidden history of the British and Irish landscapes.Cassini has created one of the largest digital collections of historical Ordnance Survey mapping of the British Isles. Our maps have all been geo-rectified and exist as seamless layers within our own GIS systems.