Apply to University of London on their website:
https://www.evision.eisa.london.ac.uk/urd/sits.urd/run/siw_ipp_lgn.login?process=siw_ipp_app&code1=ULB-LAWSE-LNS&code2=0001
The application fee is £101.
The deadline is October 1 for November 2018 semester; or April 1 for May 2021 semester.