The first problem I see is that you mistakenly believe the government will make a redundancy payment. You also state that an employer has a discretion whether or not to make a redundancy payment if an employee is made redundant. Both these are wrong.
An employer is obliged to make a redundancy payment to all employees who have worked for that employer for a minimum of 2 years. The minimum amount of redundancy pay is set by law. An employer is allowed to pay more than the statutory minimum but it is not allowed to pay less.
The only time the government will pay redundancy pay (for non-government employees) is when an employer goes bust.