'it means acts done or documents executed by the parties to the 'sham' which are intended by them to give to third parties or to the court the appearance of creating between the parties legal rights and obligations different from the actual legal rights and obligations (if any) which the parties intend to create.'
'one thing, I think, is clear in legal principle, morality and the authorities … that for acts or documents to be a “sham”, with whatever legal consequences follow from this, all the parties thereto must have a common intention that the acts or documents are not to create the legal rights and obligations which they give the appearance of creating. No unexpressed intentions of a “shammer” affect the rights of a party whom he deceived.'
'[63] … It is of the essence of this type of sham transaction that the parties to a transaction intend to create one set of rights and obligations but do acts or enter into documents which they intend should give third parties, in this case the Revenue, or the court, the appearance of creating different rights and obligations. The passage from Diplock LJ's judgment … has been applied in many subsequent decisions and treated as encapsulating the legal concept of this type of sham … [64] An inquiry as to whether an act or document is a sham requires careful analysis of the facts and the following points emerge from the authorities. [65] First, in the case of a document, the court is not restricted to examining the four corners of the document. It may examine external evidence. This will include the parties' explanations and circumstantial evidence, such as evidence of the subsequent conduct of the parties. [66] Second, as the passage from Snook makes clear, the test of intention is subjective. The parties must have intended to create different rights and obligations from those appearing from (say) the relevant document, and in addition they must have intended to give a false impression of those rights and obligations to third parties. [67] Third, the fact that the act or document is uncommercial, or even artificial, does not mean that it is a sham. A distinction is to be drawn between the situation where parties make an agreement which is unfavourable to one of them, or artificial, and a situation where they intend some other arrangement to bind them. In the former situation, they intend the agreement to take effect according to its tenor. In the latter situation, the agreement is not to bind their relationship. [68] Fourth, the fact that parties subsequently depart from an agreement does not necessarily mean that they never intended the agreement to be effective and binding. The proper conclusion to draw may be that they agreed to vary their agreement and that they have become bound by the agreement as varied … [69] Fifth, the intention must be a common intention (see Snook).' … [50] There has been some debate in the authorities as to what is required to establish the requisite common intention. In Midland Bank plc v Wyatt[1995] 1 FLR 696 ,[1996] BPIR 288 , the deputy judge, Mr David Young QC, said at 699 that: 'a sham transaction will still remain a sham transaction even if one of the parties to it merely went along with the “shammer” not either knowing or caring about what he or she was signing. Such a person would still be a party to the sham and could not rely on any principle of estoppel such as was the case in Snook.'
'In order for a trust to be found to be a sham, both of the parties to the establishment of the trust (that is to say the settlor and the trustees in the usual case) must intend not to act on the terms of the trust deed. Alternatively in the case where one party intends not to act on the terms of the trust deed, the other party must at least be prepared to go along with the intentions of the shammer neither knowing or caring about what they are signing or the transactions they are carrying out.' … [53] An allegation of sham is a serious matter. As Neuberger J said in National Westminster Bank plc v Jones[2000] BPIR 1092 , at para [59]: 'there is a very strong presumption indeed that parties intend to be bound by the provisions of agreements into which they enter, and, even more, intend the agreements they enter into to take effect.'
'there is a strong and natural presumption against holding a provision or a document a sham.' [69] Fifth, the intention must be a common intention (see Snook).'