Sentence:  Now that the Mallard upgrade to GNER&#39;s Mark 4 coaches is complete the entire  fleet is now available for service and the <WSD>Eurostars</WSD> are no longer required to  maintain the timetable. 
Meaning of the word marked with <WSD> tags:  A British Rail Class 373 (now largely superseded by (Class 374)) on any service.