Property Week reports that Blackstone have instructed Savills and Cushman & Wakefield to sell 9 Clifford Street. The 13,398 sq ft office is a Grade II listed building.

EG reports that the Reuben Brothers have submitted plans for a redevelopment of Millbank Tower. It is proposed that the height of the tower be increased by 50 ft to a height of 440 ft, incorporating three new floors. It will house 215 one-to-four bedroom flats in a John McAslan + Partners designed scheme.

EG reports that King Digital has leased the entire 64,000 sq ft Ampersand building. The office was recently completed by Resolution Property on behalf of Hong Kong’s Peterson HK. DTZ and Hanover Green were letting agents for Ampersand; JLL acted for King Digital.

EG and PW both reported that Facebook has entered an exclusivity period to let the entire 217,000 sq ft office element of Great Portland Estate’s 414,000 sq ft 1 Rathbone Place. Facebook is expected to occupy the offices on completion in 2017. DTZ is acting for Facebook; Colliers International and Knight Frank advised GPE.

Land Securities have instructed agents to offer five-year leasing deals at Portland House. The 307,000 sq ft tower has consent for residential conversion but LandSec is reported by EG to have postponed the scheme. CBRE and Tukerman are joint letting agents.