Original: From 21 July to 4 August 2006, a mock-up of the train was on show at Euston Square Gardens, near Euston Square tube station, for a Customer Acceptance Test followed by public display.
Simplified: From 21 July until 4 August 2006, a example of the train was on show at Euston Square Gardens, near Euston Square tube station, for a Customer Acceptance Test followed by public display.