the car. Accidents as well as units 357028 and 357045 being out of service at the same time led to two spare Class 321/4 units, 321408 and 321428, being leased from sister National Express train operator Silverlink for three months for use on weekday peak time services between Fenchurch Street and Pitsea via Rainham, and Fenchurch Street and Laindon to cover for the unavailable Class 357 units. The Class 321 units were used with guards as they are incompatible with the positioning of c2c's face-on Driver Only Operation (D.O.O.) mirrors. Units 357031 and 357320 were involved in a collision in East Ham depot in October 2017. There were regular short-formations between these dates while the trains were sent off to Wolverton for repairs. They later re-entered service in early April 2018. Naming c2c has named several units, many of them after longer-serving employees. 357001 – Barry Flaxman 357002 – Arthur Lewis Stride (the founder of the London, Tilbury and Southend Railway) 357003 – Southend City on Sea (renamed in support of the town's bid for City status in 2012 at a ceremony at Southend Central station on 5 August 2011, previously named Jason Leonard) 357004 – Tony Amos 357005 – Southend 2017 Alternative City of Culture – named at a ceremony at Leigh-on-Sea on 6 March 2015, in support of the town's naming as Alternative City of Culture 2017. 357006 – Diamond Jubilee 1952–2012 357007 – Sir Andrew Foster (the long service non-Executive Director of National Express) 357011 – John Lowing 357018 – Remembering our Fallen 88 1914 – 1918 (Commemorating the end of the First World War the unit was named in honour of the 88 local railwaymen who worked for the London, Tilbury and Southend section of the Midland Railway and who died during the conflict) 357028 – London Tilbury & Southend 150 1854–2004 – this unit was sent to the railway test circuit Velim in the Czech Republic on 9 November 2006 to gain safety certification for the regenerative braking system later fitted to the whole fleet. It returned in March 2007. The nameplates read 'LTS150TH1854-2004' when first applied in July 2004. They were recast with the amended text in November 2004. 357029 – Thomas Whitelegg 1840–1922 (London, Tilbury and Southend Railway locomotive superintendent) 357030 – Robert Harben Whitelegg 1871–1957 357201 – Ken Bird 357202 – Kenny Mitchell 357203 – Henry Pumfrett 357204 – Derek Flowers 357205