* The UK property market was one of the biggest victims ofthe June 23 referendum, as investors worried that financialfirms would move jobs to Europe, hurting rental demand foroffice property in the capital. * Following the Brexit vote, Derwent, which had a centralLondon portfolio worth about 5.2 billion pounds as of June 30,cut its full-year rental growth forecast to 1-5 percent from 5-8percent. * The company also said at the time that the value of thetwo developments at 80 Charlotte Street and Brunel Building hadbeen cut by 2.5 percent to 264 million pounds due to increaseddevelopment margins. * However, investor appetite has since returned, as severalcommercial property funds have reopened; data has indicatedcapital values are no longer slipping and property valuers havedropped Brexit uncertainty clauses from valuation reports. * Derwent, which develops and owns properties in areas suchas London's popular West End business districts, said onThursday it had secured 11.6 million pounds per annum of rentsince June 30, 41 percent of its year-to-date lettings. * The current rental income level stood at 28.3 millionpounds for the nine months ended Sept. 30, Derwent said,surpassing the level reported in the whole of last year. * Derwent, however, said its valuer CBRE had indicated thatthe valuation performance of its portfolio was unlikely to beimmune from the general weakness in its market, despite the highlevels of lettings, the company said in a statement.

($1 = 0.8044 pounds)

(Reporting by Esha Vaish in Bengaluru; Editing by Amrutha Gayathri)