The London Business School Master in Finance is one of the most popular and well known MSF in London (and Europe). Bloomberg BusinessWeek has a chat with an admissions officer at LBS. It includes a range of topics, but there is some information on the MSF and placement/recruiting.
Here is a link to the LBS Chat transcripts.
LBS wants work experience for their MSF. Those without work experience are encouraged to apply to the Masters in Management.
Here is a link to the London Business School Master in Finance program