UK

The Business School Loans Scheme is available via NatWest Bank for qualified individuals wishing to undertake study on MBA programs accredited by the Association of MBA. This scheme is open to candidates who are permanent UK residents, with at least two years relevant work experience following graduation from university. More info: www.mba.org.uk.
 

Another possibility is the Career Development Loans.  Loans of up to £8000 are available through Barclays Bank, Co-operative Bank, and the The Royal Bank of Scotland.  These loans have a deferred repayment plan, and are intended to help pay for vocational education or training.  The interest rate varies between banks, as do the terms of repayment.  The Department for Education and Skills (DfES) publishes information relating to the rules and regulations for the Career Development Loans (CDL) programme on the CDL.
For more information: www.lifelonglearning.dfes.gov.uk/cdl/.