Marks Barfield has won planning permission for this Corten-steel radar mast. The mast - located beside the Woolwich Arsenal Royal Artillery Museum in south-east London - is perforated at its bottom, to reduce the potential impact of graffiti, and at its top, to lessen its visual impact. The architect claims the design 'reflects qualities derived from the munitions industry' including the 'blast pattern from a cannon'.
Corten was also used to reflect the 'munitions heritage' of the nearby Arsenal, parts of which are listed and have housed weapons since the 16th century. Marks Barfield arrived at the tower's shape by twisting a 'faceted' cylinder around its central axis by 125º. The mast's height, 30m, is the minimum needed to provide adequate radar coverage for ships passing in the nearby River Thames.