score:6
As a Japanese citizen, your girlfriend does not need a visa to visit the UK:
You wonβt need a visa to come to the UK
You can stay in the UK for up to 6 months without a visa.
However, you should bring the same documents youβd need to apply for a visa, to show to officers at the UK border.
- You may want to apply for a visa if you have a criminal record or youβve previously been refused entry into the UK.
In your case, perhaps the most important document to show is a return ticket (or onward ticket) for your girlfriend to show that she won't try to stay in the UK. The fact that you have long-term residence in Japan will work in your favour.