Proof of English language level is required in the form of an official English language test certificate, usually an academic IELTS certificate or accepted equivalents, unless you are from a country where English is the primary spoken language e.g. USA, Australia, Canada etc. The university admissions departments will not usually accept unofficial certificates (NMO certificate, SCOPE language certificate, letter from Dean etc).
University of Nottingham - IELTS 7.5 or above, with at least 7.0 in all components for ALL students. The university is very strict about this, PLEASE check their table of equivalencies (NMO Special Documents folder, also through this link) or email NEO to see if your certificate is valid.
Hull York Medical School - IELTS 7.5 or above, with at least 7.0 in all components for all students. Assume same equivalencies as for Nottingham. (Table here)
The following two LCs are currently not accepting exchange students.
Barts and the London (Queen Mary University London) - Non-EU students: IELTS 5.5 or above (see link on left for accepted certificates), achieved within last 2 years. EU students don't need to prove English level to the university, so we accept any certificate in the CoD.
University of Aberdeen - IELTS 7.0 or above for all students. See section 8 of this document for further details.