The count is managed locally by Returning Officers.
At local elections in England and Wales, and at UK Parliamentary
elections, the result is worked out by the ‘First past the post'
system. That means that the candidate with the most votes is
elected.
At elections to the Scottish Parliament and the National
Assembly for Wales around three-quarters of the seats are allocated
using the 'first past the post' system. You also get a second
regional vote for a Party. Each Party submits a list of candidates
for each electoral region. The remaining seats are allocated to
candidates on those lists according to which Party has the most
regional votes, and how many seats that party has already won. An
individual can stand as a regional candidate and is treated as
though he or she were a party with only one name on their list.
This voting method is called the 'Additional Member System'.
At local elections in Scotland and Northern Ireland and elections
to the Northern Ireland Assembly the result is worked out using the
'single transferable vote' system. That means that candidates are
ranked using numbers, and votes can be transferred if the first
choice candidate no longer needs them. Any candidate that reaches a
certain number of votes is elected.