<sod>The first [[Great Western Railway (train operating company)|Great Western Railway]] unit entered service on 5 September 2016 running between [[London Paddington station|London Paddington]] and [[Hayes & Harlington railway station|Hayes & Harlington]] in peak hours to relieve congestion on some of the country's most crowded trains.{{cn|date=September 2016}}<eod>
<sod>The first [[Great Western Railway (train operating company)|Great Western Railway]] unit entered service on 5 September 2016 running between [[London Paddington station|London Paddington]] and [[Hayes & Harlington railway station|Hayes & Harlington]] in peak hours to relieve congestion on some of the country's most crowded trains.<ref>{{Cite web|url=https://www.gwr.com/about-us/building-on-our-heritage|title=Introducing our new trains|website=www.gwr.com|access-date=2016-09-30}}</ref>{{cn|date=September 2016}}<eod>