1.7 After the redevelopment of Main Building and its reoccupation by Head Office staff, MOD will return Great Scotland Yard (another central London building) and Metropole Building to their landlord, Crown Estates, and St Giles Court to its landlord, Legal and General. It will return St Christopher's House, a central London building housing non-Head Office staff, to its landlord, Land Securities. MOD has asked Modus to dispose of Northumberland House and has incentivised Modus to seek a price higher than £20.6 million through a sliding scale fee mechanism. If the proceeds are less than £20.6 million, all the proceeds will go to MOD after the deduction of Modus' reasonable selling expenses and any expenditure it has made to improve the building, which MOD has agreed. If Modus cannot make a sale to a third party, it can buy the building at the prevailing open market value if MOD agrees. MOD, however, can withdraw the disposal of the building from Modus if Modus has not achieved an open market sale within 12 months of the reoccupation of Main Building.