 The Hastings Diesels had almost completely replaced steam by June 1958 . With the introduction of the Hastings Diesels , an hourly service was provided . This split at Tunbridge Wells , with the front portion running fast to Crowhurst and the rear portion stopping at all stations . The service ran every two hours on Sundays . The Hastings Diesels also worked services on the Bexhill West Branch Line until closure on 14 June 1964 . On 22 December 1958 , 6L unit 1017 collided with 6B unit 1035 at Tunbridge Wells Central . 
