A derailment occurred on 23 January 1894: the 6 p.m. passenger train from Weymouth to Abbotsbury hauled by Armstrong standard good locomotive no 52 running tender first was negotiating the sharp curve between Upwey Junction and Upwey stations. The leading (in the direction of travel) coupled wheels derailed to the right, by the flange climbing the high rail. The Parliamentary plans showed the curve to be 12 chains radius, but there was a short section at 8½ chains. The locomotive class had a relatively long rigid wheelbase, at 15ft 8ins and there was no check rail. The driver was found to be working regular shifts of 14 hours 5 minutes on six days a week, although this was not contributory to the accident.