Sept 13 (Reuters) - BlackRock ( BLK ) plans to invest

500 million pounds ($678 million) in British data centre

infrastructure through a new joint venture with Digital Gravity

Partners, one of a string of deals to be announced next week

during U.S. President Donald Trump's state visit next week, Sky

News reported on Saturday.

Reuters could not immediately confirm the report.

($1 = 0.7377 pounds)