Angela Rayner has ordered China to explain why it has redacted blueprints for its 'mega-embassy' set to be built in London, amid fears the building's basement rooms could be converted into 'spy dungeons'.

As Housing Secretary, Rayner has given Beijing two weeks to either provide unredacted plans, according to the FT.

If China does not do this, the deputy prime minister has ordered it to 'identify precisely and comprehensively' the withheld parts and explain why the floorplan for the basement and other areas of the Royal Mint Court development have been 'greyed out'.

According to Rayner's letter to the Chinese embassy, she highlighted that two suites of anonymous rooms and a tunnel were redacted 'for security reasons'.

Other buildings on the plans were also partly greyed out, including the Cultural Exchange Building and Embassy House.