 Following the passing of the Railways Act 2005, its business was wound up and its functions transferred to the Department for Transport Rail Group and the Office for Rail Regulation.Further changes followed, which saw the government take back a greater degree of control.Another important development occurred in the aftermath of the Potters Bar accident in May 2002 when a commuter train derailed (coincidentally on the same stretch of the East Coast Main Line as Hatfield) due to poorly maintained points.