Alliance & Leicester
（重定向自Alliance and Leicester）
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![A branch of Alliance & Leicester in Omagh, County Tyrone.](/Images/godic/202412/18/Alliance_and_Leicester,_Omagh,_January_20103059.JPG")
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Alliance & Leicester plc was a UK-based bank and former building society, formed by the merger in 1985 of the Alliance Building Society and the Leicester Building Society. The business demutualised in 1997 when it was floated on the London Stock Exchange. It was listed in the FTSE 250 Index, and had been listed in the FTSE 100 Index from April 1997 until June 2008.