Top Tier Recruiters in London for a Financial Services Professional

Can anyone recommend any top recruiters/headhunters in London that specialize in financial services?. I recently arrived in London from the US, where I headed the international division of a top bank. I have an MBA and over 10 years of global banking experience. My experience is with international/expat banking/HNW/Mass Affluent - but I am open to other areas of financial services as well.

I have several leads and decent contacts, but I am trying to decipher who are the better recruiters/headhunters in this market.

Any help or advice would be greatly appreciated.