Cant answer your qsn Pi3141 sorry.
Most people are from a finance background. I think it may be difficult to get the inital interview if not from such a background, only because of the number of applications received. I think they understand that being a successful trader isnt really dependent...
Its really hard to find info about MET on the internet so ill give my 2 cents.
I applied online through a third party website which only required my CV. I got a phone call a few days later inviting me for a numerical test. The offices arent in central which is a bit annoying to travel to, but...