MAP20170027485 EU regulator warns against shell subsidiaries 1 p. Sumario: Eiopa has cautioned that London market firms setting up subsidiaries to maintain market access after Brexit must commit resources to their new EU-based operations En: Reactions. - London : Euromoney Institutional Investor PLC, 1981- = ISSN 0953-5640. - 01/08/2017 Número 7/8 - agosto 2017 , p. 6 1. Mercado de Londres . 2. Brexit . 3. Unión Europea .