As a result of the 1939 invasion of Poland, the entirety of Polish universities and academic research fell into disarray. Although very reduced tertiary teaching continued underground, many academics perished in Katyn and in Concentration camps or shared the fate of the civilian population. Those who were abroad at the outbreak of war or who managed to escape set about salvaging their heritage outside Poland. During the war several British universities hosted Polish academic departments to enable Polish students to complete their interrupted studies: thus Liverpool offered veterinary science in Polish and Oxford hosted a Polish faculty of law, and Edinburgh had a Polish Medical Faculty, whose alumni fortuitously joined the roll out of the National Health Service in the UK. These arrangements came to an end in the late 1940s and to cater for many demobilized service personnel wishing to resume their studies or research, "PUNO" (Polski Uniwersytet na Obczyznie) – The Polish University Abroad was founded in 1949, offering humanities subjects in Polish. It exists to this day with a London base at the Polish Social and Cultural Centre in Hammersmith and has opened departments in other European countries.