Tuition fee for Masters in Economics varies with institution you choose. Usually, colleges have low tuition fee than universities.

For international students in UK, the annual fee for postgraduate studies in Economics may ranges from £8,000 to £20,000.

For further illustration, here are some of the web pages of universities which include information on fee for Masters in Economics program:

University of Reading
http://www.henley.reading.ac.uk/economics/pg-taught/econ-pgt-feesandfunding.asp

Queen Mary, University of London
http://www.econ.qmul.ac.uk/postgraduate/feesandfunding/

University of Kent
http://www.kent.ac.uk/studying/funding/postgraduate/costs/academic.html

The University Nottingham
http://www.nottingham.ac.uk/international/scholarships_and_finance/tuition_fees.php

To know about fee for ACCA in UK, please visit ACCA website here:
http://www.accaglobal.com/join/acca/fees