A feature of modern train unit builds is that one 'parent' design morphs many variants with a lot looking very similar. This creates huge cost savings for manufactures in terms of design and toolings costs but does make things a little more boring for enthusiasts! The Seimens Desiro is an excellent example of this integrated and family design with many variants to suit the needs of different operators. 450009 pauses at Fleet station working the 15.12 Waterloo to Basingstoke. SWT service.
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