The GMAT is a standardised assessment, delivered in English, that helps business schools assess the qualifications of applicants for advanced study in business and management.  It is used as one predictor of academic performance in an MBA or other graduate management programmes.  It measures basic verbal, mathematical, and analytical writing skills that you have developed over a long time in your education and work.

Here are some information resources about the GMAT:

Students should get help with this at the Fulbright Commission's London office:
http://www.fulbright.co.uk/about-fulbright/contact-us. 

http://www.mba.com/mba/TaketheGMAT is a useful site. Free test preparation software is available when you register.

There are a number of preparation classes available in the UK. One very reputable firm is Kaplan, which run classes and also books that your student can use to prepare at home. http://www.kaplan.com/. See also their UK website at http://www.kaptest.co.uk/. Otherwise, putting GMAT classes UK into google gives a long list of GMAT prep books by Kaplan, and others may be available from bookstores, but if not, will definately be available on Amazon, imported from America/Canada.

See www.getfeedback.net/products/psy/wgcta_ranra.html and also www.gmattutor.com/links.html for links to free practice tests.

Visit the Graduate Management Admission Council's website at http://www.gmac.com/ which includes information on the format of the tests.