Where an employee gives to his employer notice of intention to claim but—
the employer gives to the employee, within seven days after the service of that notice, notice in writing (referred to in this Part as a "counter-notice") that he will contest any liability to pay to the employee a redundancy payment in pursuance of the employee's notice, and
the employer does not withdraw the counter-notice by a subsequent notice in writing,
the employee is not entitled to a redundancy payment in pursuance of his notice of intention to claim except in accordance with a decision of an employment tribunal.