Overall, economy is recoeries, equity and commodity markets are recovering too. I think City's getting more 景氣 since the beginning of 2010.
I saw quite a lot of Auzies around holding Working Holiday visa...
In terms of MO analysis works, you should do some research on London job websites to investigate if what your skills and experiences are needed. MO analysis is really a big range of works, isn't it?! If you have experience with financial instrument trading, it will be helpful...