Application to allow below ground works to be carried out before details are submitted and approved (Application under section 73 to vary condition numbers 18. (comprehensive highway works), 27. (public art) and 29. (new street trees) as imposed by planning permission 19/02619/FUL - also relating to planning permission 16/04487/FUL (Erection of a 10/16 storey building to provide 241 student bed spaces comprising of 29 Cluster Flats and 13 Studio Units, with ancillary accommodation and installation of screening to roof mounted plant to Former Head Post Office Building)