The polonium trail: Key locations

Here are the key sites that have formed the major part of the investigation, where radioactive substances have been found.

• University College Hospital: Where Mr Litvinenko died on 23 November - cleared for public use
• 1 Cavendish Place: Remediation work completed - cleared for public use
• 25 and 58 Grosvenor Street: 25 - cleared for public use, 58 - cleared for public use
• Best Western Hotel: Rooms isolated for remediation work - cleared for public use
• Millennium Hotel: Where Mr Litvinenko met associates shortly before he became ill - cleared after work
• Pescatori restaurant: Cleared for public use
• Itsu sushi bar: Where Mr Litvinenko dined - remediation work completed - cleared
• 7 Down Street: Part of office isolated - cleared for public use
• Sheraton Park Lane Hotel: One room cleared after remediation work; other awaiting formal clearance
• Parkes Hotel: Remediation work carried out - cleared for public use
• Hey Jo/Abracadabra: Contamination found on cushions and seating at this lap-dancing bar - cleared
• Dar Marrakesh restaurant: Contaminated shisha pipe handle and cushion cover removed - cleared
• Barnet Hospital: Where Mr Litvinenko was first taken after being taken ill - cleared for public use
• 140 Osier Crescent: Litvinenko's home - sealed off for contamination survey and subsequently cleared
• Litvinenko's Mercedes car: High levels of contamination found and reduced to safe levels
• Emirates Stadium: Arsenal ground visited by ex-KGB man who stayed at Millennium Hotel - cleared
• Royal London Hospital: Scene of Mr Litvinenko's post-mortem examination - cleared for public use

• Ashdown Park Hotel, E Sussex: Where an associate is thought to have stayed - cleared for public use
• Heathrow airport: Traces of radioactive material found on three aircraft; given all-clear in Dec 2006
• Lambeth - Mercedes taxi: Bag of waste removed and taxi cleaned - declared safe
• Moscow: Traces on a Finnish plane and at British Embassy - since cleared
• Hamburg: Flat of the ex-wife of Litvinenko contact Dmitry Kovtun and his mother-in-law's home