“Grounds on which leave to remain and variation of leave to enter or remain into the United Kingdom are to be refused. (7A) where false representations have been made or false documents or information have been submitted (whether or not material to the application, and whether or not to the applicant's knowledge), or material facts have not been disclosed, in relation to the application or in order to obtain documents from the Secretary of State or a third party required in support of the application.”
"67. First, ‘false representation’ is aligned in the rule with ‘false document’. It is plain that a false document is one that tells a lie about itself. Of course it is possible for a person to make use of a false document (for instance a counterfeit currency note, but that example, used for its clarity, is rather distant from the context of this discussion) in total ignorance of its falsity and in perfect honesty. But the document itself is dishonest. It is highly likely therefore that where an applicant uses in all innocence a false document for the purpose of obtaining entry clearance, or leave to enter or to remain, it is because some other party, it might be a parent, or sponsor, or agent, has dishonestly promoted the use of that document. The response of a requirement of mandatory refusal is entirely understandable in such a situation. The mere fact that a dishonest document has been used for such an important application is understandably a sufficient reason for a mandatory refusal. That is why the rule expressly emphasises that it applies ‘whether or not to the applicant's knowledge’."
"Dishonesty or deception is needed, albeit not necessarily that of the applicant himself, to render a 'false representation' a ground for mandatory refusal."