Ross Atkins About… Four reasons why relations between Britain and China are strained

Yang Tengbo was this week identified as a 50-year-old Chinese businessman and alleged spy who has been banned from entering the UK.

It raised questions about an issue that has faced several UK governments – the UK’s relationship with China.

As the UK chancellor prepares to visit China in the new year, the BBC’s analysis editor Ross Atkins looks at how relations between the two countries have become so strained.