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The FTSE 100 closed lower on Tuesday as a rally in mining stocks was offset by hefty falls in software, data analytics and advertising companies amid perceived AI threats.

The FTSE 100 index closed down 26.97 points, or 0.3%, at 10,314.59.

The FTSE 250 ended down 135.68 points, or 0.6%, at 23,290.37, and the AIM All-Share closed up 3.99 points, 0.5%, at 818.33.

On the FTSE 100, Relx slid 14%, London Stock Exchange Group tumbled 13%, Experian slumped 8.3%, Sage Group declined 6.5% and Pearson 7.7%.

The sharp falls came after US artificial intelligence firm Anthropic released new โ€˜agentic AIโ€™ tools for corporate legal teams, including a legal plug-in for its

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