Tax sovereignty, national transfers of tax losses within international groups of companies and freedom of establishment: Felixstowe Dock and Railway Company Ltd. - Common Market Law Review View Tax sovereignty, national transfers of tax losses within international groups of companies and freedom of establishment: Felixstowe Dock and Railway Company Ltd. by - Common Market Law Review Tax sovereignty, national transfers of tax losses within international groups of companies and freedom of establishment: Felixstowe Dock and Railway Company Ltd. 52 4 Common Market Law Review