Biffa flourished underlying operating profit by 10 per cent to £81.2 million on 8.8 per cent acute revenue of £977.7 million in a year when it completed seven possessions.
More are planned for this year.
Chairman Ken Lever said: “Ian can atmosphere extremely proud of what he has achieved at Biffa.
“He will be leaving a question in good health, the result of the growth strategy he and his colleagues have been implementing for the most recent eight years.”
Mr Wakelin said that he would leave “comforted that we have achieved a great deal, including successfully bringing the subject back to the stock market”.
He added: “I would like to thank all of my allies across the business for their support and commitment over the years.
“Biffa is a best business with a great future ahead of it.
“I wish Michael every outcome for the future as he takes the business on to a new and exciting stage in its development.”
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