Three senior managers at Cunningham Ellis & Buckle are leaving the company as part of the loss adjuster's restructuring.
A statement said Martin Robinson, the business development director for personal lines, Ian Fulton, business development director for liability and George Bentley, client director, have suddenly left the company to purse their careers elsewhere.
In addition, staff at the Croydon and Haydock offices have been notified that they are at risk of redundancy. Both offices are to close.
The move is part of a restructuring of the CEB's personal lines business which includes streamlining the senior management team.
The UK's largest loss adjuster has now established seven service centres over the past 18 months and closed down the personal lines branch network.
Home service director, Brian Clark said: "Our service centres are now fully operational and no longer need the overflow support.
"We are also reviewing the general staffing levels in personal lines, prompted by improved processes and a lower than projected level of domestic claims.
"While we aim to keep job losses to the absolute minimum, this appraisal is necessary to establish our optimum level of operations."