A file of correspondence and reports concerning visits by Bulgarian trade union delegations to the United Kingdom. The documents cover a visit to Britain by a Bulgarian trade union delegation led by Misho Mishev, the chairman of the Central Council of Bulgarian Trade Unions, at the invitation of the British Trades Union Congress; details of the programme for the visit; details of a joint communiqué issued at the conclusion of the visit; and details of Mishev's meeting with the British minister of state Goronwy Roberts. Other documents in the file include briefs on Bulgaria, covering Anglo-Bulgarian relations, the role of trade unions in Bulgaria, and Bulgaria's political system, foreign policy, economy, and foreign trade. The file also covers a conference of the British National Union of Mineworkers, which included the delivery of a speech by a Bulgarian delegate; and notification that the Scottish Trades Union Congress has invited a Bulgarian delegation to its 1979 event.