æt sˈɪkstiːn:twˈɛnti ˌɔn twˈɛlv mˈeɪ nˈaɪntiːnhˈʌndɹɪd twˈɛnti sˈɛvən, ɐ lˈɑːɹdʒ fˈoːɹs ʌv jˈuːnɪfˌɔːɹmd ænd plˈeɪŋklˈoʊðz pəlˈiːs ˈɑːfɪsɚz ˈɛntɚd ðə hɛdkwˈɔːɹɾɚz ʌv ˈɑːɹkoʊz ænd ðə sˈoʊviət tɹˈeɪd dˌɛlɪɡˈeɪʃən, loʊkˈeɪɾᵻd æt fˈoːɹɾi nˈaɪn mˈʊɹɡeɪt ɪn lˈʌndən nˈoʊn æz ðə ɹˈʌʃə hˈaʊs ɔːɹ sˈoʊviət hˈaʊs.
At 16:20 on 12 May 1927, a large force of uniformed and plain-clothes police officers entered the headquarters of Arcos and the Soviet Trade Delegation, located at 49 Moorgate in London known as the Russia House or Soviet House.