Development Securities PLC is a holding company engaged in property development, investment and trading. It operates in three segments: Investment, Development and trading and Operating. Its Investment segment is engaged in the management of its investment property portfolio, generating rental income and valuation surpluses from property management. Its Development and Trading segment is engaged in managing its development and trading projects. Its Operating segment services office operations. In July 2012, it , in partnership with Cathedral Group plc, acquired 2.2-acre site in 2.2-acre site and disposed of its interest in residential land element. In October 2013, the Company in joint venture with Patron Capital sold the Phones 4u Arena in Manchester to a Mansford Real Estate LLP Fund. In November 2013, Development Securities PLC announced that it has acquired Tubs Hill House, a 64,800 square feet, office building in Sevenoaks, Kent.