Claims — Diplomatic protection — Whether United Kingdom under a duty to bring proceedings against foreign State for alleged human rights violation against United Kingdom national

Consular relations — Protection of nationals — Limitations — Whether United Kingdom consul under a duty to provide consular assistance to United Kingdom national awaiting trial in foreign State — Limits of what consul can be expected to do

Diplomatic relations — Protection of nationals — Limitations — Whether Foreign and Commonwealth Office under a duty to afford protection to United Kingdom national awaiting trial in foreign State — Whether enforceable — Scope of discretion in conduct of diplomatic relations — Whether requirement that Foreign and Commonwealth Office demand release of national rather than request clemency

Human rights — Due process — United Kingdom national convicted of criminal offence in foreign State — Whether Foreign and Commonwealth Office under a duty to ensure that trial fairly conducted — Diplomatic protection — Whether United Kingdom under a duty to bring proceedings against foreign State for alleged human rights violation against United Kingdom national — The law of England