. "19"^^ . "The British Rail Class 207 (or 3D) diesel-electric multiple units were built by BR at Eastleigh in 1962. The fleet had a lifespan of 42 years. The Southern Region class 201 thru 207 DEMUs are nicknamed 'Thumpers' due to the noise they made while in motion."@en . . "British Rail Class 207"@en . . .