Its an odd one. They say the development involves "sensitive redevelopment of the Grade II Listed Custom House building", "retaining its façade". But unless they mean retaining the facade in a manner to the building at the bottom of Alto Lusso I just don't see how they can get a building big enough to fit 248 rooms on this site. I don't see such a proposal being approved - at least it shouldn't for a listed building!
Update:
Good morning David,
Thank you for your email.
We have had a technical error with our website this morning, which is being resolved. The documents will be downloadable from lunch time today.
In the meantime if you have any questions please do not hesitate to contact me.
Kind regards
Andrea