LONDON, Aug 8 (Reuters) - KKR has urged the board of

British real estate investor Assura to back its

takeover bid and withdraw its support for a rival offer from

Primary Health Properties ( PHPRF ).

KKR said in a statement on Friday it had met with the board

of Assura in recent days to lobby for its own cash takeover of

the company after Assura backed a bid from London-listed PHP in

June.