1st Question.-- Hello I'm enquiring about your caravan, that is for sale?
Never give the make or model, as this will cause confusion to any back street traders. You can tell this from their response. What caravan? or, sorry which caravan are you on about? A second indication of back street dealers is to look out for adverts showing ''Call Dave, lee, Jimmy, etc, as this is usually a sign of a trader and a name will relate each caravan for sale. If you do call, answering an advert and the advertisement says selling on behalf of a parent (or some other relation / friend, beware of this also. - This could be a trader.)