Aussie Looking at London Trading Graduate Programs

Hi,

I've got a really diverse background and am trying to leverage that in to a trading role. I did a Bachelor of Science (Agriculture) as an undergrad, then worked as junior trader for a while at a large US physical trading firm in Australia, from there I went to work as research scientist in the ag industry. I complete a Master of Finance in June.

I am wondering if I will be able to apply for graduate positions in London (particularly guys like Cargill, Glencore etc.). It may be a stupid question, but do they consider people from abroad? Secondly, what are the timelines around graduate programs usually? From memory I think they shut off around November and when do the roles start?

Thanks in advance.