Tier 4 visa rules now require international applicants whose first language is not English to show that they have a certain level of English ability.
This has been identified by the UK Border Agency (UKBA) as follows:
UKBA have provided further information on the changes and how it may affect you, and a new list of approved English language tests and how they meet the CEFR level B2 level.
In order for Newcastle University to issue a CAS for use in requesting a student Tier 4 visa, applicants must have met the English language conditions outlined above.
More information is available about visas and immigration for international students.