Operation Tân

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Operation Tân ({{IPA|cy|ˈtɑːn}}, "fire") was the name of a series of police raids in Wales between 1 October 1979 and 30 September 1980. The aim of the operation was to identify members of Meibion Glyndwr, a Welsh Nationalist group responsible for burning English Holiday homes within the Welsh countryside

It has been criticised as a more generalised trawl of left and nationalist milieux within Wales."Political policing in Wales" John Davies, Lord Gifford, and Tony Richards.

(1984, Cardiff: Welsh Campaign for Civil and Political Liberties )