London Met University Student Union used OpenSTV to elect multiple officers using ERS97 STV in April 2012.
Meek and Warren STV
Previous rules are all designed for hand counting. Meek and Warren STV provide the most accurate proportional representation, but the count must be done with a computer and cannot be done by hand. The basic idea is similar to Fractional Transfer STV. There are two main differences: (1) winning candidates also receive vote transfers from eliminated candidates and surplus votes from other winning candidates, and (2) when a candidate is eliminated it is as if the candidate never entered the election. These changes create a feedback loop of vote transfers which requires a computer to implement.

