Thanks for the answers guys, not sure if it makes a difference but I'm on a Tier 5 YMS visa for the UK. I'm here for the next 2 years.
I'll make sure to look into this as soon as possible.
All it is is that some consulates in countries not your own, won't consider your application. Some will, some won't.
Since you legally reside in England You shouldn't have any problem getting one in London.