If you require consular assistance for any reason whilst in China and there is no diplomatic office in the city where you are staying, you should in the first instance contact the main British Embassy in Beijing, who will be able to provide assistance to you should you need it as well as advice about your nearest representation.
British Embassy
11 Guang Hua Lu
Jian Guo Men Wai
Beijing 100600
Telephone: (86) (10) 6532 1961British citizens need a visa in order to travel to China, and this should be arranged through the Chinese Embassy in London prior to departure.