Proposals for a £250m luxury hotel development next to Blackfriars Station on the banks of the River Thames have been submitted for planning. Designed by Alsop Architects for Heatherfield Limited (managed by Blackfriars Investments), the 28,000 sq m (gross external area) scheme involves the re-development of the existing No. 2 Puddledock office building and the Mermaid Conference and Event centre.