孔子学院总部 / 国家汉办
The Confucius Institute have offices on Euston Road next to Euston Station where people can enquire about taking their HSK, or about getting a visa for China. The telephone number for these offices is 020 7388 8818, and the fax number is 020 7388 8828.
The full postal address is 124 Euston Road, London, NW1 2AL
You can also contact them by email on info@hanbanuk.org