Bowling alley operator Ten Entertainment Group said chief executive Alan Hand had decided to resign for personal reasons.
Hand agreed to remain in the role until 14 December, the company said.
A search for his successor would begin immediately, it added.
The company also providing a brief trading update, stating that since the end of the first quarter it had continued to trade 'well' with the integration of four new site acquisitions going smoothly.
'We respect Alan's wish to step down,' chairman Nick Basing said.
'Working with him closely for nearly 10 years in this business has been a pleasure and I am disappointed to not be continuing this successful journey together.'
At 9:47am: (LON:TEG) Ten Entertainment Group PLC share price was -8p at 256p