GSM London is a private provider of higher education based in Greenwich, south-east London, and also Greenford, west London and founded in 1973. GSM London offers business-specific courses at undergraduate and postgraduate levels alongside other specialist training, and caters to a large number of international students. As of 2015, GSM London has educated over 20,000 students. Business Hours: Open Mon - Sun 9:00 am to 5:30 pm