I require a visa from China for business travel from Hong Kong.

I am a UK citizen holding a working visa for Hong Kong from 03/17-03/19. I require a China Visa for business meetings in Shenzhen. I was issued a new passport in January 2016. For security reasons, I destroyed the old passport.

However, I have been informed that due to new legislation in China, I require my old passport for an application - which has been destroyed. How can I still receive a China VISA?