The Joint Comprehensive Plan of Action was implemented on 16 January 2016: Iran placed two-thirds of its centrifuges in storage and dispensed with 98% of its stockpile of low-enriched uranium. For 10 years it will take Iran at least 12 months to produce enough fissile material for a weapon.
Iran's recent ballistic missile test (29 January) was not a breach of the JCPoA, but is inconsistent with UNSCR 2231.
The Government remains concerned about Iran's ballistic missile programme and we continue to urge Iran to abide by UN Security Council Resolution 2231; we are committed to ensuring that UN and EU sanctions which impose restrictions upon this programme continue to be robustly enforced.
The Government remains concerned about Iran's destabilising activity in the region; we continue to encourage Iran to work constructively with its neighbours to resolve conflicts and promote stability.