Britain on Friday summoned Iran's most senior diplomat in London to protest the execution of Mohsen Shekari, the first such execution over recent anti-government unrest.
"The execution of Mohsen Shekari by the Iranian regime is abhorrent. He is a tragic victim of a legal system in which disproportionate sentences, politically motivated trials and forced confessions are rife," Foreign Secretary James Cleverly said in a statement.
"We have made our views clear to the Iranian authorities – Iran must immediately halt executions and end the violence against its own people."