For the students thinking of going to the UK to study
Language Requirement for the UK Visa application
As a result of changes in the rules regarding visas to enter the UK by the UKVI (UK Visa and Immigration), taking an English proficiency test other than TOEFL has become a requirement in order to acquire the needed application form (CAS) to obtain a visa to study abroad in the UK.
TOEFL is not accepted as a test to certify your English ability
NOTE
For applying study abroad programs for the fall 2016, it is mandatory for applicants to acquire certain IELTS score required by applying university. Moreover, if you are applying for EX programs and CS-L programs which are mainly focused on English language studies, it is required to achieve a certain level of IELTS for UKVI test, which has a different form from the general IELTS (Academic) test. It is highly recommended to take the exam well in advance to the application.
Information
UKVI:https://ukvi-international.faq-help.com/
British Council:http://www.britishcouncil.jp/
日本英語検定協会:https://www.eiken.or.jp/ielts/en/