letter box company - a company, usually set up in a tax haven, which has complied only with the bare essentials for organisation and registration, usually having no office, business assets or employees but only the address of a person, such as a bank or attorney, to whom letters can be addressed and which serves as its registered office
Whereas, in the exercise of such powers, the Commission will take account not only of the risk of competition being eliminated in a substantial part of the relevant market and of any benefit that might be conferred on policyholders resulting from the agreements, but also of the risk which the proliferation of restrictive clauses and the operation of accommodation companies would entail for policyholders ...