"Where an employee claims that his employer is liable to pay to him an employer's payment, and either - (a) that the employee has taken all reasonable steps (other than legal proceedings) to recover the payment from the employer and that the employer has refused or failed to pay it, or has paid part of it and has refused or failed to pay the balance, or (b) that the employer is insolvent and that the whole or part of the payment remains unpaid,
"For the purposes of sections 122-126, an employer shall be taken to be insolvent if, but only if, in England and Wales, -
"Due to the Company's inability to meet its financial obligations Receivers have been appointed over the property."