preserved, whilst the rest were scrapped. The standard units lasted until early 2004, when they were either withdrawn and scrapped, or transferred to South Eastern Trains. One of the 4 BEP units, no. 2314, was converted into a 3CEP to replace no. 1199, and was renumbered 1198. Of the remaining six 4 BEP units, four were withdrawn in October 2004, leaving just two units remaining in traffic into 2005. The 3 CEP unit, no. 1198, was withdrawn at the end of December 2004, and was preserved by the EMU Preservation Society on the Dartmoor Railway before moving in 2008 to the Pontypool and Blaenavon Railway and then in 2013 to the Chinnor and Princes Risborough Railway. A replacement came in the form of 3Cig unit no. 1499. The final two 4 BEP units 2311 and 2315, soldiered on in traffic until withdrawal in March 2005. They were both later preserved at the Eden Valley Railway as 4Ceps. Further use and departmental units Over the years, several unit have seen further use as departmental units. These are listed below: 7102 – Converted to Tractor Unit 932080. Scrapped in 1996 1500 – Converted to Tractor Unit 932081. Scrapped in 1996 1505 – Converted to Route-learning Unit 930082 for use by Southern, including removal of end-gangways. Later converted to static training unit at Selhurst depot. Sent for scrap in September 2005. 1512 – Used as a 3-car Tractor Unit by South West Trains at Bournemouth depot. Scrapped in June 2005 after being replaced by a Class 73 electro-diesel locomotive. 1545 – Converted to 3 car test unit 932545 and exported to Sweden. Converted to AC Overhead Line and DC Dual Voltage and was a test bed for IGBT and Adtranz Traction Package. Scrapped there in 2002. 1620 – Converted to test unit 932620 for central door locking trials. Then used for paint trials at Eastleigh Works. Scrapped in November 2005. Accidents and incidents On 4 January 1969, units 7181 and 7117 formed a passenger train that overran a signal in thick fog and ran into the rear of a parcels train near , Kent. On 15 July 1970, unit 7015 collided with a lorry on an occupation crossing between and , Kent due to errors by the crossing keeper. The driver of the lorry and the guard of the train were killed. On 28 January 1993, unit 1521 overran the buffers at Ramsgate