Opposition leaders in the UK are concerned following through with plans for a giant Chinese Embassy in London. 

The UK Government's approved the mega embassy, located near Tower Bridge in the central city. 

Opponents have been warning the embassy could be used as a spying base. 

UK correspondent Gavin Grey told Andrew Dickens there are fears the embassy will be used to eavesdrop on both data, and people. 

He says the embassy's so big, and  there are lots of rooms that appear to have no use. 

LISTEN ABOVE