Under the law of England and Wales or Northern Ireland a document is executed by a company—
A document is validly executed by a company if it is signed on behalf of the company—
The following are "authorised signatories" for the purposes of subsection (2)—
A document signed in accordance with subsection (2) and expressed, in whatever words, to be executed by the company has the same effect as if executed under the common seal of the company.
Where a document is to be signed by a person on behalf of more than one company, it is not duly signed by that person for the purposes of this section unless he signs it separately in each capacity.
References in this section to a document being (or purporting to be) signed by a director or secretary are to be read, in a case where that office is held by a firm, as references to its being (or purporting to be) signed by an individual authorised by the firm to sign on its behalf.
This section applies to a document that is (or purports to be) executed by a company in the name of or on behalf of another person whether or not that person is also a company.