570. For the purposes of this Act, a company shall be deemed to be unable to pay its debts—

(a) F454[if—]

(i) a creditor, by assignment or otherwise, to whom the company is indebted in a sum exceeding €10,000 then due, has served on the company (by leaving it at the registered office of the company) a demand in writing requiring the company to pay the sum so due, and

(ii) the company has, for 21 days after the date of the service of that demand, neglected to pay the sum or to secure or compound for it to the reasonable satisfaction of the creditor,

F455[(ba) F456[…]]

or

(b) F454[if—]

(i) 2 or more creditors, by assignment or otherwise, to whom, in aggregate, the company is indebted in a sum exceeding €20,000 then due, have served on the company (by leaving it at the registered office of the company) a demand in writing requiring the company to pay the sum so due, and

(ii) the company has, for 21 days after the date of the service of that demand, neglected to pay the sum or to secure or compound for it to the reasonable satisfaction of each of the creditors,

or

(c) if execution or other process issued on a judgment, decree or order of any court in favour of a creditor of the company is returned unsatisfied in whole or in part, or

(d) if it is proved to the satisfaction of the court that the company is unable to pay its debts, and in determining whether a company is unable to pay its debts, the court shall take into account the contingent and prospective liabilities of the company.