Cambridge English
https://www.cambridge.org/gb/cambridgeenglish
Macmillan English
http://www.macmillanenglish.com
Oxford University Press
http://elt.oup.com/?cc=gb&selLanguage=en&mode=hub
Pearson Languages
https://www.pearson.com/languages/
National Geographic Learning
Collins ELT
https://collins.co.uk/pages/elt
Scholastic ELT
https://shop.scholastic.co.uk/elt
Black Cat readers
https://www.blackcat-cideb.com/en/
Wiley English as a Second Language titles
https://www.wiley.com/en-sg//Subjects-c-FL70
Kaplan Publishing
Richmond
Express Publishing
http://www.expresspublishing.co.uk/
DELTA Publishing
http://www.deltapublishing.co.uk/
Helbling Languages
https://www.helbling.com/int/en
Garnet Education
http://www.garneteducation.com/
ABAX
Pavilion Publishing
https://pavpub.com/pavilion-elt
Michigan English Language Teaching
http://www.press.umich.edu/elt
Alphabet Publishing Books
https://www.alphabetpublishingbooks.com/
Wayzgoose Press
Prosperity Education
https://www.prosperityeducation.net/
MM Publications
https://www.mmpublications.com/
Global ELT (exam materials)
Language Solutions
http://www.languagesolutionsinc.com/grfs/
Pro Lingua Learning
https://www.prolingualearning.com/