This is an N scale model of the Class 59/0 operated originally by Foster Yeoman and now Aggregate Industries under the Mendip Rail Ltd banner.
The model has been designed to fit the Dapol Class 66 chassis.
More information about finishing the model can be found on Jo Alder's Blog: http://www.rmweb.co.uk/community/index.php/blog/360-ewsjos-blog/