waves of Polish migration to the UK is comparable to 19th- and early-20th-century Polish migrations to France. In both cases, the original mainly political migrants were drawn largely from elite and educated strata and reflected the heterogeneity of their class, and they quickly established cultural institutions such as libraries and learned societies. They included representatives of past Polish minorities such as Jews, Germans, Armenians, Georgians, Ruthenians, and people of Muslim Tatar descent. In both cases, they were followed by waves of more socially-homogeneous economic migrants. Since the Second World War, Poland has lost much of its earlier ethnic diversity, with the exception of Polska Roma, a distinct ethnolinguistic group and other Polish Roma communities, and this has been reflected in recent Polish migrations to the UK. A recent study of comparative literature by Mieczysŀaw Dąbrowski, of Warsaw University, appears to bear this out. A key military and latterly, news and cultural role was played by broadcasts in Polish, beamed to Poland, from London by the BBC's Polish section. They began on 7 September 1939 with coded messages among prosaic material for the Polish Underground and after expansion into English by radio ended on 23 December 2005, a victim of budgetary cuts and new priorities. Across the mainland UK, in the late 1940s and early 1950s, the original Polish communities chiefly comprised former members of the Polish Resettlement Corps. They set up Polish clubs, cultural centres, and adult and youth organisations, e.g., the Polish Youth Group (KSMP). They contributed to, and in turn were supported by, veterans' welfare charities such as veterans' SPK (Stowarzyszenie Polskich Kombatantów), airmen's and naval clubs. These organisations' original aims were to provide venues for socialising and exposure to Polish culture and heritage for children of former Polish Resettlement Corps members. Many of these groups remain active, and steps are being taken to cater to more recent Polish migrants. The post-war phase saw a continuation of Polish intellectual and political life in microcosm in the UK, with the publication of newspapers and journals such as Dziennik Polski and Wiadomości, the establishment of independent (of the Polish "regime") publishing houses such as "Veritas" and "Odnowa", with a worldwide reach, and professional theatrical productions under the auspices of a dramatic society, "Syrena". Orbis Books (London) was a bookseller, publishing house and for a time a record producer (under the label Polonia UK), founded in Edinburgh in 1944 by Kapt.