Nelson Peltz, the activist investor who called for Cadbury Schweppes' confectionery and beverages operations to be split, is continuing to build his stake in the confectionery giant.

Peltz's investment vehicle Trian, has teamed up with the Qatar Investment Authority to boost its stake in Cadbury from 3.47% to 4.5%.

In a brief statement Cadbury said: “Cadbury Schweppes confirms that Trian has recently indicated that they and certain of their affiliates have increased their economic interest in Cadbury Schweppes' shares from 3.47% to approximately 4.5%.”

Cadbury Schweppes' understanding is that the instrument through which the increased interest is held is not reportable and it has not received formal notification of the increase in writing.”