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During 1994 a project was initiated by Ordnance Survey to investigate the requirement for completing the multi-million pound digital revision of 1:2500 scale mapping within Great Britain. This paper, although concentrating on this scale of mapping, discusses the revision policy issues that faced Ordnance Survey and the practical implications arising from implementing the policy for its 1:2500 and 1:10 000 basic scale mapping. Use of contractors was seen as a prime requirement as the resources available within Ordnance Survey were not sufficient to implement the full revision programme. This paper discusses the background to the task and considers the range of photogrammetric options and contractual and quality procedures required for the revision of the mapping over the next few years.

This paper discusses the role of Ordnance Survey International as a division within Ordnance Survey and outlines the work currently being carried out world-wide. It identifies the commercial structure of the business and justifies the reasons for participation in overseas markets. The key business activities of Adviser to the United Kingdom Department forInternational Development, international relations, library services, training and consultancy are all described. In addition, three case studies are included to support the main text.

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