Desiro is an international offering - are you sure they were referring to UK-specific versions? Because international ones cannot be used here.Siemens still list Desiro as a current product in several forms including the new Desiro Verve, a Regional / Intercity version with options up to 200 kmh, remember the reqest for expressions of interest suggests that either metro or mainline fleets could be replaced. Also Siemens has a new S-Bahn product, Mireo, which would fit the metro option.