Seems like we've lost a very valuable trading partner.
https://uk.yahoo.com/news/japanese-aren-t-daft-why-080019995.html
To me it makes chilly reading.
For example
[In the 1980s this is where consensus was reached that Margaret Thatcher’s commitment to the European single market and customs union, along with her labour market reforms, offered a major opportunity for Japanese business. It would allow Britain to be the place where Japan could develop its famed “just-in-time” delivery system by sourcing production across Europe, without tariffs, regulatory and customs checks, and foster the recruitment and management of talent Europe-wide. They took her at her word, and the investment boom that has transformed the British car industry was born.
Today, a new Japanese consensus has formed. The Conservative party and its leaders cannot be trusted. They ignore warnings, break their word and do not understand business – personified by Old Etonians Boris Johnson and Jacob Rees-Mogg. Brexit is a first-order disaster, striking at the heart of how Japanese companies organise themselves as "lean manufacturers. "]