This 7 1/4 " gauge locomotive runs on the Harrow and Wembley Society of Model Engineers track at Roxbourne Park, Field End Road, Ruislip, Middlesex, England. http://www.hwsme.org
This 5 " gauge Camelot is found at the Beech Hurst Park Miniature Railway, at Bolnore Road, Haywards Heath, West Sussex RH16, United Kingdom. www.beechhurst-railway.org.uk/
Another view of Hurst Park's 5" gauge Camelot, at the Sheffield Park Model Railway Exhibition, July 2015. N WREN.
Here are images of miniature and model versions of Camelot.