Sovereign immunity — Immovable property — House leased by foreign State as residence for senior diplomatic agent — Action to enforce covenant in lease — Whether State immune from suit — State Immunity Act 1978, Sections 6(1) and 16(1)

Diplomatic immunity — Diplomatic agent and his wife — Exception to immunity in respect of ‘real action’ — Diplomatic Privileges Act 1964 — Vienna Convention on Diplomatic Relations, 1961 — The law of England