ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti tˈuː, smˈɪθ wʌz ɚɹˈɛstᵻd, ɐkjˈuːzd ʌv spˈaɪɪŋ fɚðə kˌeɪdʒˌiːbˈiː, ænd tʃˈɑːɹdʒd wɪð fˈoːɹ əfˈɛnsᵻz ˌʌndɚ sˈɛkʃənz wˈʌn wˈʌn bˈiː ænd sˈiː ʌvðə jˌuːkˈeɪ əfˈɪʃəl sˈiːkɹᵻts ˈækt nˈaɪntiːnhˈʌndɹɪd ɪlˈɛvən.
In 1992, Smith was arrested, accused of spying for the KGB, and charged with four offences under sections 1(1)(b) and (c) of the UK Official Secrets Act 1911.