Village Hall, Chesham Road, Wigginton, 8pm. £4 inc refreshments. Litvinenko was an ex-KGB spy murdered by two Russian assassins using the deadly radioactive nerve agent polonium210. Speaker Paul Barwick, who had a full career in police intelligence and counter terrorism, will look at the life of Litvinenko, the attempts on his life and the public enquiry in 2016 following his death in 2006.