Real estate, utilities and banks were among the best-performing UK sectors at 0711 GMT, with utility Centrica (>> Centrica PLC) up 7.5 percent, housebuilder Persimmon (>> Persimmon plc) up 7.3 percent and Lloyds Banking Group (>> Lloyds Banking Group PLC) up 6.5 percent.

"The surprisingly decisive result reduces uncertainty over the next government," Morgan Stanley analysts wrote in a note.

(Reporting by Sudip Kar-Gupta; Editing by Lionel Laurent)