I think Shrewsbury Model Centre, sells them . Have had a printed catalogue off them before, but their online site is a eBay shop.I don't think these locos are on it.
Shrewsbury Model Centre
Unit 2 Knights Way, Battlefield Enterprise Park, Shrewsbury, Shropshire, SY1 3AB
Tel: 01743 464004
Narrow gauge Francophile interested in 1m, 60cm,50cm , 40cm and smaller gauges . Build in scales from 1/6th to 1/24th. Also 1/32nd and 1/35th using 16.5mm track to represent 50cm and 60cm gauges. http://www.rue-d-etropal.com