By Jonathan Davies

China has cut its main interest rate by 0.25% to 4.6% after share prices continued to tumble following Black Monday.

It is the fifth time the People's Bank of China has cut interest rates since November.

The central bank said it cut rates to reduce "the social cost of financing to promote and support the sustainable and healthy developments of the real economy".

Shares in China have fallen dramatically this week. On Monday, the Shanghai Composite index was down 8.5% - it's biggest one-day drop since 2007 - leading it to be called 'Black Monday'. And those woes continued on Tuesday, with shares falling a further 7.6%.