Islamic Republic claims that Ambassador Simon Shercliff's comments are 'interventionist content'

State media quotes Iranian foreign ministry slamming Britain's latest penalties as 'illegal action'

British FM announces ramped up sanctions against Tehran for human rights abuses, says decision on further measures 'is firmly in the hands of the Iranian regime itself'

British PM pledges to 'not accept collaborations which compromise our national security' as he's grilled in parliament over allegations

Measures announced by Foreign Secretary James Cleverly also target 4 commanders in the paramilitary group, over brutal crackdown on protesters

Iran International shifts operations from London office to Washington after police inform them of danger; British government summons top Iranian diplomat over matter

Tehran blocks access to its banks, issues travel bans after Western nations penalize regime for crackdown on protests

Speaking in Bahrain, James Cleverly vows that Britain will work with its allies across the region to counter Tehran

'We do not tolerate threats and intimidation from foreign nations towards individuals living in the UK,' says James Cleverly

Foreign secretary says London 'stands with the people of Iran who are bravely calling for accountability and fundamental human rights'