A characteristically offbeat luxury apartment tower designed by Will Alsop is due to start on site proper this autumn after a refinancing deal for the south London project that is likely to be the late architect’s last big scheme in the capital.

Alsop, who died in May at the age of 70, originally won planning permission for Heliport Heights, on a site next the London Heliport in Battersea in 2014.

His aLL Design practice’s corten-clad scheme features 14 apartments in a 15-storey building that straddles an existing structure on the site that will be retained – creating a block that will effectively be 20-storeys tall.

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