David Newlands, the Chairman of payment services provider PayPoint, is to leave the company this summer after 16 years at the top.Newlands will step down after the company's annual general meeting in July."David has made a fantastic contribution to PayPoint and has been instrumental to our success," said Chief Executive Dominic Taylor.He will be succeeded by former Cobham Chief Financial Officer Warren Tucker, who joined the company as a Non-Executive Director on Wednesday.Tucker is currently a Non-Executive Director at UK-listed firms Reckitt Benckiser and Thomas Cook."I am honoured and delighted to be joining PayPoint at an exciting time in its development and look forward to working with Dominic and all our talented colleagues in the future," Tucker said.BC