Camelot chief executive Dianne Thompson will retire in October and the company will be restructured.
The National Lottery operator said today that Thompson, who has led Camelot for the past 14 years, will retire at the end of October and at the same time the group would be split into two functions, one managing the UK business and one its global activities.
Andy Duncan, managing director of the UK business since 2011, will become chief executive of Camelot UK Lotteries Ltd. Nigel Railton, group chief financial officer and strategy director, will become chief executive of Camelot Global Services Ltd.
Both Duncan and Railton will then report independently to Lee Sienna, chair of the Camelot Group.
Camelot said the move was made to "ensure the best possible platform for future growth".
Since winning the contract to run the National Lottery in 1994, the group has won other lottery contracts around the world, including a joint bid to run the Irish Lottery. Camelot was bought by the Ontario Teachers’ Pension Plan in 2010.
A spokeswoman for Camelot said was too early to say whether the restructure would result in any redundancies, but "it is not expected that it will have any significant impact".
Sienna said Thompson would leave a lasting legacy.
"Dianne Thompson’s contribution to Camelot and the worldwide lottery sector has been immense," he said. "Under her leadership, the UK National Lottery has gone from strength to strength – with long-term sales growth of more than 35 per cent and more than £21bn raised for National Lottery good causes."
Thompson said that running Camelot had been her dream job."I feel privileged to have worked with such fantastic colleagues, who have always put National Lottery players – and the good causes we ultimately support – at the heart of everything we do," she said. "Through their energy and creative drive, we have grown sales, and therefore revenues for National Lottery projects, over the long term. Having successfully broken into the fiercely competitive global lotteries market, the group is also on a great footing to fulfil its long-term international growth aspirations."