“36. Generally a party who wishes to do so can object to the jurisdiction of an adjudicator and may seek to do so either in general terms or by making a reservation on a specific matter. 37. The underlying issue is whether, taking account of the particular reservation, a party by participating in the adjudication has waived its right to object on grounds of jurisdiction. If the party does not raise any objection and participates in the adjudication then, even if there is a defect in the jurisdiction of the adjudicator, that party will create an ad-hoc jurisdiction for the adjudicator and lose the right to object to any decision on jurisdictional grounds. If a party raises only specific jurisdictional objections and those jurisdictional objections are found by the court to be unfounded then that party is precluded from raising other grounds which were available to it, if it then participates in the adjudication. That participation amounts to a waiver of the jurisdictional objection and confers ad-hoc jurisdiction. Obviously this assumes that, at the relevant time when the party participated in the Adjudication, the jurisdictional objection was available. Some jurisdictional objections, for instance as to the scope of the dispute, may only become apparent during the adjudication process or at the time of the decision.” 10. Discussion 11. Essentially, the Firm seeks to argue that, because there was in practice inferentially at least a novation whereby it was agreed by Stannard, the Firm and the Company that all the Firm’s obligations to and rights against Stannard were assumed by the Company, the adjudicator simply had no right or jurisdiction to deal with Stannard’s claims for retention. Mr Gibson-Lee argued that this was a threshold issue and not on analysis a jurisdictional challenge at all, citingSection 108 of the Housing Grants Construction and Regeneration Act 1996 (“HGCRA”): “(1) A party to a construction contract has the right to refer a dispute arising under the contract for adjudication under a procedure complying with this section.”