Siemens reveals full-scale mock-up of Desiro City EMUs for Thameslink January 27, 2014 | Europe Company News Siemens has revealed the full-scale mock-up of the new Desiro City electric multiple units (EMUs) for the Thameslink north-to-south London rail service. The order for the EMUs was placed by the Depart... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password