I would say it depends on which license you require. If it is an US FAA license the examination would have to take place within the US as their licences cannot be rewarded overseas. From what I have read Sheffield is the best school for that purpose.
For working elsewhere you may want to consider the United Arab Emirates GCAA license which is possible to obtain undertaking the Flight Operations Management courses by Jeppesen Academy in Dubai, Frankfurt or Crawley. The training is pretty thorough following the US FAA theoretical syllabus and pratical training for manual flight planning.
The Eufalda website gives more options at
http://www.eufalda.org/Training_Schools.html