In this paper, we present a methodology to automatically derive the generalised representations of buildings at scales 1:25K, 1:50K, and to delineate the urban area for 1:250K scale representation. These generalised representations are derived from 1:10K scale. The automatic generalisation processes are realised using the specific algorithms and the generalisation models available in the CartAGen (CARTographic Agent GENeralisation) platform. The CartAGen is an open source map generalisation platform developed by IGN France. The proposed methodology in this paper is evaluated using the data products available from the Ordnance Survey, UK, and the Survey of India, India. This study investigates the applicability of the CartAGen platform for generalising the data products which have been excluded from the investigations by IGN France. This paper discusses the modifications required for such data products.