June 30 (Bloomberg) -- Charterhouse Capital Partners LLP improved terms of a leveraged loan to support its buyout of French call-center business Webhelp, two people familiar with the deal said. The seven-year term loan will now pay 500 basis points more than the euro interbank offered rate, an increase of 25 basis points from the margin proposed earlier this month. The private-equity firm also reduced the size of the borrowing to 200 million euros compared with 225 million euros it initially sought. Charterhouse will increase its own equity contribution to make up the balance of the financing, the people said.

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