74 None of these factors, taken individually, necessarily has the consequence that the appellant is not a trading corporation. A trading corporation can contract with government to provide a charitable or welfare function in fulfilment of government policy. Ordinarily, the provision of large scale legal and allied services, for reward, is trading and the fact that it is not done for profit is not determinative of its character, as I have said. However, when all of the factors to which I have referred are taken together, it cannot be said that what is done by the appellant has a commercial character. Rather, its activities, including its entry into the contract, seem to me to be removed from ordinary concepts of trade or trading, whether for reward or otherwise, in much the same way as those of a government-run legal aid agency. As I have stressed, its services are provided, in all but the most exceptional cases, free of charge: St George County Council (569). They are provided for altruistic purposes, not shared by ordinary commercial enterprises (Ku-ring-gai (160) (Deane J)), under a constitution which requires the appellant to act only in furtherance of the altruistic objects. The appellant engages in a major public welfare activity pursuant to an agreement with the Commonwealth under which it will be re-imbursed for most of its costs: E (343) (Wilcox J); Fowler. Although its services have been 'purchased' by the Commonwealth under the contract, its activities continue to lack a 'commercial aspect': Hardeman [26]; J S McMillan (355) (Emmett J); Ku-ring-gai (142) (Bowen CJ), (167) (Deane J). It follows from what I have said that the appellant is not a 'trading corporation' for the purposes of s 51(xx) of the Constitution and the notice of contention succeeds. The Commission has jurisdiction to determine the issue before it.