
https://www.niesr.ac.uk/sites/default/files/publications/NIESR%20Landscape%20Series%20-%20China%20and%20the%20United%20Kingdom%2C%20Economic%20Relationships_0.pdf

http://blogs.worldbank.org/developmenttalk/wto-s-trade-facilitation-agreement-and-doing-business-reforms-are-they-related-and-how

http://www.esf.be/new/wp-content/uploads/2018/07/ESF-Press-Release-on-Importance-of-Services-Trade-in-EU-UK-Future-Relastionship.pdf